On one of my Windows Server 2003 boxes I tried to launch the 'Help and Support' service only to be told the service wasn't running. So I natuarally went to start the service only to find it wasn't even there!
After a bit of reading I found that this problem has been occuring on SBS boxes after installing Windows Server 2003 SP2. My box isn't SBS but IS running SP2. The fix for SBS and non-SBS boxes is this: