Linksys adapter Driver.
I think you need some really good driver for xp as in order to use Linksys adapter. Wireless connections are often gets disconnected because of driver problem. Most of the time it would not be detected by the computer at all if it is facing any issue regarding the driver installation. In your case also i think there would be some problem with the driver you have installed for adapter on your computer. Or it may be missing some files to make it work properly. All you can do now is reinstall the Linksys adapter driver again and try connecting it. Hope it will work this time.
In The Absence Of Light