Hi NatePed,
When you downgraded from Vista to XP you need to reinstall some drivers.
Can you go to the device manager and post any errors (yellow !).
If this is a Dell Laptop XPS GEN 2. Your drivers are here:
http://support.dell.com/support/down...&catid=&impid=
Be sure to install the CHIPSET driver first.
Hope this helps.
Bill