Sky player

[taz04]

Hello,
About two months ago i watched a film on sky PC. i have an account on the sky but it says that the laptop i'm trying to watch some other films on is not the main registered computer.
However, this was the first computer i watched anything on and registered with. when i look at my registered computers, it says the type is windows 7. It can't be any other computer apart from the one i'm trying to watch them on now because this is the ONLY computer i own that has windows 7.
Has anyone got any ideas to what is going on?
Tazx
p.s i have looked at all the FAQ's

[taz04]

btw, when i said computer i meant laptop.