Well the short-cuts in the Pograms\AVG 7.5 are
AVG Control Center - "C:\Program Files\Grisoft\AVG7\avgcc.exe"
AVG Test Center - "C:\Program Files\Grisoft\AVG7\avgw.exe"
and the Uninstall AVG but I delete that one because you can uninstall from Control Panel.
Test center will run a virus check for you but I always use Windows Explorer and just right-click on your hard drive root C: or the folder you want to check and select
Scan with AVG.