Hi there, this is just a tip, for those who own IBM Thinkpad T40 T40p T41, as it came to my attention, one weekend I had my thinkpad HDD replaced, and installed a fresh XP pro, then went to ibm website and downloaded all necessary drivers including WLAN and Ethernet.
But to my surprise, wireless did not even blink, then I spend a substantial amount of time searching for a solution with little help, and all the drivers suggested by ibm support did not solve the problem.
SOLUTION.
I went to ibm website and downloaded EVERY SINGLE driver install off lenovo’s site that mentioned anything networking, LAN, wireless etc.
There was about 7-10 files downloaded and the first one I tried worked!
If anyone out there had the same problem, find this file on lenovo site
“1rwc89ww.exe”
http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-59438
After you install it it will make a directory D:\DRIVERS\WIN\WLLANINT
After it installs run the exe in the new directory.
I didn’t have to do anything at all it just had a bubble pop up saying wireless networks detected!
Hope this helps someone