REFORMAT GO

Ok, I have a very blatant and very annoying virus. No scanners pick it up, I can't find a firewall tool that finds logs for the virus reporting back to anyone, and it pops up every half hour to 45 minutes as an unnamed, un-icon'ed program in the taskbar for a fraction of a second. However, when it comes up, it focuses the desktop on that program...if I'm playing a game and DirectX does not have control of the display directly (i.e.: menus), it will swap to that viral program. But that's not the case.

I've decided that I will scan all my data twice over and reformat my system hard drive. I've also heard that keeping system images of a pristine installation of XP is a good idea. So...
I think I will move all of my C: data to a secondary HDD and reformat my system drive. Should I make a partition *just* for XP and partition the remainder for actual data? And is there any way I could do an XP reinstall without moving everything? I've heard of such a possible method, but I doubt if I could repartition the drive....so I prithee! CAN I MAKE AN XP AND XP GHOST IMAGE PARTITION WITHOUT HAVING TO MOVE DATA!? (Probably not, so...) What size partition will I need to reinstall XP to? Any websites out there that might describe the process of such a technique?

>>2
I hate to hijack this thread but I have to say something. Anytime someone posts a question in /g/ a bunch of people have a shitfit and tell them to come here. When a question gets posted here someone always has to say google (I get the feeling everyone saying google doesnt know shit anyway), and most of the replies are just trolls. If you cant see my point here it is: SHUT THE FUCK UP. If you dont like the questions than ignore them, even though they ARE supposed to be here.