Okay I really hope people can understand what I'm trying to explain here...

I have 2 hard drives, C and D... I had XP on my C: and when I installed Vista, I put it on my D:... Now I wanna reformat both, and put XP back onto my C:... I just dunno what to do...

Do I put in my XP CD, and do a clean install on my C:, then when it's done installing, just delete everything off of my D:?? It's just if I do that, I dunno if it would damage/delete any needed system files, coz technically it would still have Vista installed on it....

PLEASE HELP!!

Formatting means erasing everything off the HDD's.

Well Do I just do a clean install of XP on my C:?

I'm sorry but I REALLY need an answer ASAP... Anyone?

Yes just go ahead and reinstall XP on your C: drive, but make sure you do it by booting the computer from the XP CD and during setup delete the XP partition and then point the install to the free space. This will remove every part of the old install. Then once XP is up and running you can do what ever you like to D.
http://www.windowsxphome.windowsreinstall....ldhdd/index.htm

Unless when you say reinstall XP you mean a repair install that will keep your current programs and settings.

It worked

So, now I can just delete everything on my D:? Even if it still has Vista on it?

If there is nothing you want to keep then yes you can just delete all the files you see or format the partition or delete the partition and start again. Probably best to at least format it so you know everything is gone. You can do partitioning or formatting from Disk Management in XP.
http://www.theeldergeek.com/disk_management.htm