seems u dont have the drivers for windows Xp. i advice you to get the latest windows XP service pack - which is SP2. This package contains most drivers of common and uncommon hardware used.
Another way to go abt this is by
(A) You can also manage the installation process. This is what u do. >Go to control panel. > Click on Add hardware. > Click Next > Select the option "YES, i have already connected the hardware."
It show you a list of installed hardware, scroll to the bottom of that page and select "Add new hardware device" >Next
(1a) Select "Install the hardware that i manually select" >Next.
Then select NETWORK ADAPTER. >Next
Then select HAVE DISK, and browse to the driver where the Driver CD of the wireless card was inserted. Usually, the file needed shld be indetified easily, Be sure that you browse to the Windows XP folder on the CD for installation to continue, otherwise you cld install drivers for another OS version. select Ok. >Next and let the installation proceed. This shld work for you.
(B) Incase it doesnt, you will have to uninstall the drivers installed, You can do that by going to the device manager. Remove the hardware from your computer. After the uninstallation, it is recommended to restart your computer. Dont connect the wireless card to the computer. Repeat the above procedures in (A) above but there is a significant change. I mean go to control panel, >Add Hardware, >Next, Select the option NO I HAVE NOT ADDED THE HARDWARE YET. >Next ... Please carry on from (1a) above.
It shld assist you. Note that will be prompted to connect the device to your system later. I suppose it is a USB connection oriented.