CCleaner and MS Silverlight

I deinstalled silverlight under Win7. But CCleaner shows under "Apllications" still "Microsoft Silverlight". I think I have to delete some keys in the registry. But what are the names?

Just look under both HKEY_LOCAL_USER & HKEY_LOCAL_MACHINE & go to: Software/Microsoft/Silverlight

The entry for Silverlight is:

[Microsoft Silverlight]
ID=2169
LangSecRef=3023
DetectFile=%LocalAppData%\Microsoft\Silverlight\is
DetectFile2=%LocalLowAppData%\Microsoft\Silverlight\is
Detect=HKLM\Software\Microsoft\Silverlight
Default=True
FileKey1=%LocalAppData%\Microsoft\Silverlight\is|*.*|RECURSE
FileKey2=%LocalLowAppData%\Microsoft\Silverlight\is|*.*|RECURSE
ExcludeKey1=FILE|%LocalAppData%\Microsoft\Silverlight\is\*\|disabled.dat
ExcludeKey2=FILE|%LocalLowAppData%\Microsoft\Silverlight\is\*\|disabled.dat

So you should deleted HKLM\Software\Microsoft\Silverlight from your registry. Though be careful while editing the registry.

HKLM = HKEY_LOCAL_MACHINE

Also check if the DetectFile folders still exists and remove those also.