To format your drive is drop kick easy. Go get a boot disk from bootdisk.com, and DELPART.EXE. Delpart the partitions, use FDISK to partition and format to format.
But why would you want a formatted drive? The machine won't run Windows but will be "formatted" as you asked.
I need to reformat Windows Xp but, do not have the discs. I did this once before and cannot remember, please help me.