MS 2007 Office problem

hey all. having a small, but irritating issue with Office 2007. My ribbon at the top is displaying like in the pic attached. Its like its displaying in 8bit colour or something. Its like this in all my office applications (word, excel etc). Anyone got any clues as to what might be wrong.
A bit more info, this only happened after in installed MS Internet Explorer 8, which i then uninstalled. I have also done a system restore, but no luck.
Cheers 8-)

A bit more info, this only happened after in installed MS Internet Explorer 8, which i then uninstalled. I have also done a system restore, but no luck.
Cheers 8-)
