After updating Windows XP SP2 (update KB925902) there can be problems launching the AVG Control Center.

The displayed error message can be related to one of the following system files: hhctrl.ocx, user32.dll, shell32.dll.

The solution is to install the patch from Microsoft, which can be downloaded here http://support.microsoft.com/kb/935448/ 

If the problem persists, please try to uninstall Brico pack Vista inspirat 1.1, or another used graphic user interface upgrade.