Vista Tutorial - Deleting the Search Index in Vista Beta 2

Hi,

I'm having trouble with Vista's search function. It does not index, and when
I go to indexing options in the Control Panel, it just says "waiting for
status update", with all buttons greyed out (except for the run as
administrator button, and even when running as administrator, all buttons are
still greyed out). Is there anyway to delete the search index and start fresh
with the index? I have used Vista Beta 2 since it has been released, and have
not had a problem with the search until about a month ago.

Thanks,

Ronald