Eee that is not good. There is a couple of things. One is to reinstall windows
and then reinstall Ubie. Or get Supergrub disk

users.bigpond.net.au/.../SuperGrubDiskPage.html

Scroll down till you see the highlighted green link and go from there. It can be
a easy fix. It depends on you.

Or this link

http://ubuntuforums.org/showthread.php?t=442945