You can download DRIVER FOR NOTEBOOK LENOVO THINKPAD A20m 2628-11A from the below webpage:

http://www-307.ibm.com/pc/support/site.wss/product.do?template=/product.do?template=%2Fproductpage%2Flandingpages%2FproductPageLandingPage.vm&sitestyle=lenovo&brandind=10&familyind=50278&machineind=73399&modelind=
73753&partnumberind=0&subcategoryind=0&doctypeind=9&doccategoryind=0&operatingsystemind=49979&validate=true

From the above web page, you can download:

Keyboard Customizer Utility for Windows 2000, XP - ThinkPad 

Hard drive firmware update utility (Bootable CD ISO) - ThinkPad 
 
ThinkVantage Access Connections for Windows XP, 2000 - Notebooks 
   
ThinkPad Power Management driver for Windows Vista, XP, 2000, Me, 98 SE - ThinkPad 
 
EasyEject Utility for Windows Vista, XP, 2000 - ThinkPad 
 
Plug-in for ThinkVantage Productivity Center and Lenovo Care that enables support for various 3rd party applications - Desktops / Notebooks 
 
CD-ROM, CD-RW, DVD, CD-RW/DVD drive firmware update utility (Bootable CD ISO) - ThinkPad General 
 
Hotkey driver for Windows 98/Me/NT 4.0/2000/XP - ThinkPad 
   
Configuration utility for Windows 95, 98, 98SE, Me, 2000, XP - ThinkPad 
   
Software Installer for Windows 2000/XP 
 
Configuration utility for DOS - ThinkPad 
   
TrackPoint driver for Windows XP, 2000 - ThinkPad 
  
TrackPoint Accessibility driver for Windows 98/SE/Me/NT/2000/XP/XP Tablet PC Edition 2005 - ThinkPad 
 
Hard drive firmware update (Bootable diskettes) - ThinkPad General 
 
USB Serial/Parallel adapter driver for Windows 98, Me, 2000, XP - ThinkPad General 
   
Battery MaxiMiser and Power Management features for Windows - ThinkPad General 
  
CDRW/DVD combo drive firmware update utility (Bootable diskette) - ThinkPad General 

Configuration utility for Windows NT - ThinkPad General 
  
CD-RW Firmware Update utility diskette - ThinkPad General 
  
Monitor File for Windows 98, Me, 2000, XP - ThinkPad General 
  
CD-ROM firmware update utility (Bootable diskette) - ThinkPad General 
  
DVD firmware update utility (Bootable diskette) - ThinkPad General 
  
Presentation Director for Windows 98/98SE/Me/2000/XP - ThinkPad General 
  
Power management driver special package for Windows 2000/XP - ThinkPad General 
  
CD-ROM driver for DOS and Windows 3.1 - ThinkPad

TrackPoint driver I for Windows 95, 98, Me, NT - ThinkPad General 
  
Video driver (ATI Mobility-M) for Windows XP - ThinkPad A20m, A21e, A21m, A22e (Celeron models only), A22m (except 2628-Sxx), X20, X21, TransNote 
  
CMD Ultra DMA IDE driver for Windows 95/98/Me/NT/2000 - ThinkPad General 
  
Hibernation utility package - ThinkPad A2*, A3*, G40, R32, R40, T2*, T30, T40/p, T41, T42, T43, X2* X3*, X40, TransNote 
  
BIOS Update (Non-Diskette) - ThinkPad A20m 
  
BIOS Update (Diskette) - ThinkPad A20m 
  
Remote CMOS Update Utility diskette for LanClient Control Manager (LCCM) - ThinkPad General 
  
Video driver (ATI Mobility-M/M1) for Windows 2000 - ThinkPad A20m, A21e, A21m, A22e, A22m, X20, X21, TransNote 
  
Czech Keyboard layout file for Windows 2000 - ThinkPad General 
  
Ethernet driver for 3Com 10/100 Mini PCI combo card for DOS/Windows 95/98/Me/NT4.0/2000/XP - ThinkPad A2*, A30, T2*, X2*, TransNote 
  
UltraPort Camera I and II - Files 
  
Autorun feature may not work with DVD/CDRW combo drive and Windows 98 - ThinkPad General 
  
PC Doctor diagnostics for DOS - ThinkPad A2* 
  
Ultrabay swap utility driver for Windows 95/98 - ThinkPad General 
  
Hitachi hard disk drive noise wav file - ThinkPad General 
  
Modem driver (Lucent AL or Intel PRO/100 SP combo card) for Windows Me - ThinkPad 600X, A2*, A3*, T2*, X2* 
  
Modem driver (Lucent AL or Intel PRO/100 SP combo card) for Windows 2000/XP - ThinkPad 600X, A2*, A3*, T2*, X2*, TransNote 
  
Modem driver (Lucent AL or Intel PRO/100 SP combo card) for Windows 95/98 - ThinkPad 600X, A2*, A3*, T2*, X2*, TransNote 
  
Modem driver (Lucent AL or Intel PRO/100 SP combo card) for Windows NT - ThinkPad 600X, A2*, A3*, T2*, X2* 
  
Fast-swap driver for Windows Me (ACPI) - ThinkPad A20m/p, A21m/p, A22m/p, A3*, T2*, T30, X2* 
  
Installation supplement files for Windows 98 - ThinkPad A2*, A3*, T2*, T30, TransNote 
  
Windows installation supplement files for Windows 2000 - ThinkPad A20m, A20p, A21e, A21m, A21p, A22e, A22m, A22p, A30, A30p, A31, A31p, T20, T21, T22, T23, T30, X20, X21, X22, X23, X24, TransNote 
  
Windows installation supplement files for Windows Me - ThinkPad General 
  
Mediamatics DVDExpress video player update - ThinkPad General 

PC Card drivers for DOS - ThinkPad

Odyssey multimedia gallery application updates - UltraPort Camera I and II 
  
UltraPort Camera I and II - Files 
  
Audio driver for Windows 2000 - ThinkPad A2*, T2* 
  
Modem driver (3COM Mini PCI combo card) for Windows XP - ThinkPad A2*, A30/p, T2*, X2*, TransNote 
  
Modem driver (3COM Mini PCI combo card) for Windows Me - ThinkPad A2*, A30/p, T2*, X2*, TransNote 
  
Modem driver (3COM Mini PCI combo card) for Windows NT - ThinkPad A2*, A30/p, T2*, X2*, TransNote 
  
Modem driver (3COM Mini PCI combo card) for Windows 95/98/98SE - ThinkPad A2*, A30/p, T2*, X2*, TransNote 
  
Modem driver (3COM Mini PCI combo card) for Windows 2000 - ThinkPad A2*, A30/p, T2*, X2*, TransNote 
  
IBM Data Transfer 
  
Modem driver (Xircom Mini PCI combo card) for Windows 95/98/NT4.0 - ThinkPad A2*, T20, T21, X2* 
  
Modem driver (Xircom Mini PCI combo card) for Windows 2000/XP - ThinkPad A2*, T20, T21, X20, TransNote 
  
Modem driver (Xircom Mini PCI combo card) for Windows Me - ThinkPad A2*, T20, T21, X20, TransNote 
  
3Com Managed Boot Agent ROM Image - ThinkPad A20, A21, T20, X20, X21, TransNote 
  
On Screen Display utility for Windows - ThinkPad General 
  
Windows XP installation supplement files - ThinkPad General 
  
Supplement file diskette III for Windows 95 - ThinkPad 570/E, A2*, A3*, T2*, X2*, TransNote 
  
Hitachi hard disk drive firmware update - ThinkPad 
  
3Com Managed Boot Agent - ThinkPad A2*, T2*, X2*, TransNote 
  
Hitachi hard disk drive firmware eflash update - ThinkPad 600X, A20m, T20 
  
Hitachi hard disk drive firmware diskette update - ThinkPad 600X, A20m, T20 
  
EasyCD and Direct CD patch for Windows 2000 - ThinkPad General 
  
Portable Drive Bay 2000 driver - ThinkPad General 
  
MultiPort USB Hub - Files for Windows 98/Me/2000/XP 
  
Windows NT shutdown service - ThinkPad A2*, T2*, X2* 
  
Video driver (ATI Mobility-M/M1) for Windows NT 4.0 - ThinkPad A20m, A21e, A21m, A22e, A22m, X20, X21

Access ThinkPad online User’s Guide for Windows - ThinkPad A20 
  
Video driver (ATI Mobility-M/M1) for Windows 95/98/Me - ThinkPad A20m, A21e, A21m, A22e, A22m, X20, X21, TransNote 

PC Doctor for Windows CMOS diagnostic patch - ThinkPad General 
  
PC Doctor - Windows SMART information patch 
  
Lucent Modem driver for Linux - ThinkPad 390X, 570E, 600X, A2*, T2*, X20 
  
Intel Boot Agent - ThinkPad A2*, T2*, X2*, TransNote 
  
8MB USB Memory Key - Files 
  
Ethernet driver for Intel PRO/100 Mini PCI adapter (Combo card) for DOS, Windows 95/98/Me/NT4/2000 - ThinkPad A20m, A20p, A21e, A21m, A21p, T20, T21, X20, TransNote 
  
Audio driver for Windows NT 4.0 - ThinkPad A2*, T2* 
  
Audio driver for Windows 95/98 - ThinkPad A2*, T2* 
  
Hibernation utility diskette II for standalone boot - ThinkPad General 
  
Intel Priority Packet Software for Windows 95(OSR2)/98/Me/NT 4.0/2000 - ThinkPad A2*, T2*, X20, TransNote 
  
Portable Drive Bay - Files 
  
PIIX IDE driver for Windows NT - ThinkPad General 
  
AL Modem Enabler for Windows 95/98/NT 4.0 - ThinkPad A20, T20 
  
Access ThinkPad customization chart - TP General 
  
Intel SpeedStep Technology Applet - ThinkPad 600X, A2*, T2*, X2*, TransNote 
  
Hibernation utility diskette - ThinkPad 240/X/Z, 570/E, A20, T20, X20 
  
Lotus MDM file for internal Lucent modems - ThinkPad General