Office Icons Corrupt?

My office Icons disappeared recently. Only the Word, Excel, PowerPoint Icons. Outlook is still normal. What I have is an icon like you would get if the file had no association with a program. When I click on the icons it opens the office doc or program normally so the association is still good. I tried deleting ShellIconCache already in XP and the folder doesn’t exist. How do I recover those icons? Thx.. Rob