uninstall ubuntu10.10 pent 4

If you used wubi to install Ubuntu then use contrl panel to remove it.

Your question is very fragmented. Is this what you meant??

ya i try but nothing i install ubuntu whit cd that i dowloaded from site,window open and ubuntu also but in win xp after a while it freeze sometimes it freeze on start up i just need to get it off not a pro at this need step by step instruction tks for the trouble

Did you use wubi or did you boot to the CD to install the OS. if you write in full english then it will be a lot easier.

i boot cd

To remove a normal Ubuntu install:
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Step 1. Reinstall the windows bootloader. Boot from a windows dvd (or repair disk) to a repair console and install the windows bootloader. Run "fixmbr".
Step 2. Make sure it boots directly to Windows
Step 3. Go to Control Panel, Administrative tools, Computer management, Disk management, and delete Ubuntu partitions or reformat them.

If you don't have a windows repair disk for step1, you could use a lilo (similar to windows) - install this from Ubuntu before deleting. Go to a terminal (CTRL+ALT+t) and run the following:

sudo apt-get install lilo

sudo lilo -M /dev/sda mbr

(ignore warning screen after first command; After installing lilo, reboot and make sure windows boots directly, then continue with Step 3 above)

To remove a WUBI install
====================
If you have a WUBI install - or remaining pieces of it, the following link shows how to uninstall:
https://wiki.ubuntu.com/WubiGuide#Uninstallation

You can tell if you have a wubi install - the first screen you see after Bios is one that offers two choices "Windows" or "Ubuntu". You also have files wubildr.mbr and wubildr in c:\
You also have an \ubuntu directory either c:\ubuntu or on the drive you installed wubi to.