Currently Being ModeratedJul 27, 2011 10:52 AM (in response to Rabie_Golf)
Install the Mac OS X 10.6.8 Update Combo
Restart your Mac.
FYI... you can access the Mac App Store either from your Apple menu icon (top left in your screen) then click App Store, or your Applications folder, or your Dock.
The combo should reinstall the App Store for you.