When I get to my grub I get the correct options for the operating systems I have installed. (Windows XP and Ubuntu 7.10).
However when I select one of the operating systems I get the message "Error 22: No such partition".
I have found that if I have the Windows XP disk in the drive that I can boot into any of the operating systems without problem. I have reinstalled Linux with Ubuntu, Kubuntu and OpenSUSE. The grub updates but I still get the same error.