Dude, you should go to http://www.bootdisk.com

download something along the lines of a boot disk with all the commands

format a floppy disk and chuck all that stuff into it
once you've done that, stick the disk in and boot it baby

now you are here
A:>
type this: format C:
ones it has been formatted reboot and go to bios setup

enable boot from CD

stick in your windows CD

save changes and exit

windows does the rest, just follow the instructions

that should be it, but if not then ask more questions

good luck, if you really can't get it to work then go to a shop and pay for it