Nope, my Windows XP's "c:[OS folder]\system32\drivers" folder doesn't have it. The technical guys removed it. And nope, automatic driver search doesn't work. Also, the machine doesn't have CD/DVD drive and I don't have the Windows XP CD. Where do I download that driver online?
Open an elevated command prompt and enter this command
hit the enter key, scan will run and replace any missing or corrupted windows system files and drivers. This should replace the usb drivers that are included in Windows 7.
EDIT: For XP you do not need to open an elevated command prompt, just open cmd and run the same command, it will however ask for your Windows XP install cd.
download Driver Identifier and let that tool find out the hardware id of the USB-device you have in your machine .. it will also yield multiple driver-download-urls directly into your face.