Cannot uninstall Ubuntu 8.10

from my understanding, wubi installs ubuntu in a file within the windows NTFS partition, it does not install to a new or empty partition.

It installed fine into the empty NTFS partition...

#1, do you have a reinstall disk for Vista
#2 if so, boot the disk, and see if an option to "repair" exists,
#3 if so, choose it,
#4 you should get a C:\ prompt, enter help,
#5 a list of options is presented, once you see the list, you can enter help and the option name to get some info, search for a option to reset the boot (I think in XP it is called "Fixboot)
#6 if found, use that, it will repair your bootrecord to boot only Vista
#7 now you should be able to remove Linux

Good luck

Thank you ealthuis, I'll try this as soon as I get home.

Should I simply delete the files from the ubuntu folder, or will there be other files hidden elsewhere?

Your second question I cannot answer. I have however another thought:

Boot linux

Open terminal in Linux: Applications>Accessories>Terminal, then enter:

   gksu gedit /boot/grub/menu.lst

You may be asked for a password, use the one you logged in with in the first placce

This will show a listing of the boot menu

In this list find the line that says "default 0", keep that in mind, now go find the list of boot items, some way down past ##End of defaults## Count the first line of each entry, starting with 0.

You will find Windows could be #2, or 3, depending on the number of updates have happened to the Linux Kernel. When you have counted that go back to "default" and change the 0 to the number you counted. Then save the file and close and get out of terminal : Exit

Restart your system, and the default boot will highlight Windows

Please read http://bobmorris.wordpress.com/2008/02/09/how-to-uninstall-ubuntu-on-dual-boot-windows-xp-using-windows-only/

Hope this helps