Reinstall Windows if I have Linux installed

How to reinstall Windows if I have Linux installed?

You already have Linux installed? Well if you want windoze it will overwrite your MBR and kill grub / lilo.

If you need windoze more than Linux, reinstall windows, and eventually get around to fixing grub.

If you need your computer, and Linux will give you the necessary features, read up on how to reinstall grub after installing windoze (before you reinstall windoze!). There is a program I have seen called supergrub (I think). Read up on that, it may be an easy grub reinstaller - I haven't read more than the headlines, so you have to go with that from here. Anyway read up enough to understand your options, and proceed.