I think i uninstaled office as well as auto cad, re booted and then re instaled office, it was a lot of p***ing about but i got office runing again. It was a while ago so i cant remember exactly how i fixed it. Im not sure if auto cad installs somthing else too, somthing to do with network meetings, i think that has to go as well. It was at least a year ago i had this problem i cant remeber exactly what i did to sort it out. Vomit