Babagirls, I don't know how often you reformat, but if you do it often, this tip I read in Maximum PC a ways back has saved me many hours when it comes to this tedious task. You'll need a CD-Burner for this to work.
Pick up PowerQuests "Drive Image"
Reformat your system, reinstall windows and when everything works fine, defrag.
Install Drive Image, have it take a image of your harddrive. Burn that image to CD. Include the Drive Image directory too. Be sure to make this a bootable CD.
Test it out to make sure that everything works.
Now whenever you want to reformat, you just pop that cd in and restore the image. Within a couple minutes you've got a brand new PC with windows already installed and defragged.