alright try this: go to the start menu and click 'run' and type regedit.
once in regedit open the directory: hkey_local_machine\system\currentcontrolset\contro l\lsa
once ur in that folder, go down the list on the right until you find 'restrictanonymous'. double click it and look at the value data. it should be a 0. so if it says 'Value Data: 1', change the 1 to a 0.
hope this helps
by the way, this whole process i just explained, do it on the computer u can't access