formating ubuntu

im really tired of ubuntu and i want to remove it and put windows on... i know on windows you have to type in format to remove everything but i cant find that option on ubuntu so my friend told me to go to http://simpleuninstaller.com/?s=g?? but what do i do after i download it?

That's to uninstall software. You need a boot disk with fdisk on it.

http://bootdisk.com/

if you have a windows xp disk, just throw it in & boot off from it. during the begeinning of the installation it will ask you what partition you would like to install windows on. delete the partition ubuntu is currently on, create a new one for windows, and proceed with the install. the appropriate keys for doing all of the above are stated on the screen, so just read what it says and follow the steps and you'll be all set. the installer formats the partition you've just created for windows for you.

ok thank you very much

no problem.
if you have any more questions feel free to post back

i want to do the same thing. which one is ubuntu using. does it tell you?

if you're booted into ubuntu you can open a terminal and enter sudo fdisk -l
that will list your partitions and their partition types. ubuntu would probably be on an ext2 or ext3 partition (whatever type you chose during the installation). you could make note of which partition that is and then continue with the windows disk.
another option may be after running the windows disk, at the prompt displaying the partitions, usually with an ntfs/fat32 partition the installer will give the partitions labels (such as C:, D:, etc). i can't remember from my experience, but i'm guessing the ubuntu partition wouldn't have a drive label..