Hi, I'm having trouble reactivating windows after I reinstalled. When I go to http://www.microsoft.com/genuine/ it doesn't give me an error but windows activation gives me 0xC004C003 telling me the key is in use. This is the only computer I own and the only one I have installed vista on. I would have tried calling about this but could not for the life of me find the number.
You can get started with phone activation by typing "slui.exe 4" (w/o the quotes) in the Start Search box in the Start Menu and pressing Enter. The phone activation process takes about 6 minutes.