Thank you very much for posting the system information.
Please let me know, is the wireless adapter detected in device manager when connected? Is there an exclamation mark in the device driver? What is the driver status when you open the properties window?
You may try updating the BIOS in your system to see if that makes a difference. I was also wondering if you have any chance to test the wireless adapter in a different system, not necessarily with Windows* XP. This is due to a possible compatibility issue.
I hope the suggestions will be helpful.