Since Windows 7 upgrade in January I've been unable to remove 20 entries in the Registry which for example are "VirtualBoxAsw Class" ,"VirtualBoxAsw.1. I've been using RegSupreme for a number of years and keeping the Registry clear of "rubbish" but these entries cannot be deleted as they are owned by "system". These entries are flagged as invalidactiveX/DDE/COm/DCOM/OLE item.The date of the failed entries coincides with the date of Win 7 upgrade. Ideas???