I just got a new mainboard (Intel DG965WH), processor, and RAM, and installed these in my XP Pro computer. However, I get a PCI.sys error message when Windows is loading. I did some searching and it appears that there is a bug in XP which causes this that was fixed in SP2. I downloaded SP2 but I am not sure hot to install it since I cannot boot to the OS. Can I boot to another device and run the update on the HD, or do I have to create a slipsteamed CD (http://www.theeldergeek.com/slipstreamed_xpsp2_cd.htm) and reinstall XP over itself?