remove Windows

from time,the only time i remove the windows OS is when i want to re-format my HDD or when there is a crash or virus.
i ran into a minor problem few days,i wanted remove windows without formatting but i just couldn't know how to un-install windows like any other program
i run a win98 and win2000 on a partitioned HDD.
any way out?

First off , Windows isn't a program !!

I always recommend using Ghost to save an exact image of your current OS to file . In case anything goes wrong , just restore your files back from that image quite easy and very fast .

Hi,

Just format the HDD , and reinstall Windows.

Thanks
BB