Problems Registering Student Version (for support) online

I keep getting prompts to register my product when using orstarting up Solidworks student edition 2008 - 2009. However when iattempt to enter my serial number online, in the customer portal,it simply says that it is invalid and not recognisable.
I don't know if it's because us student users cannot actuallyregister for support, or if for some reason mine just doesn't work.

I'd be greatful if someone could help.

Note: 24-month license, bought june 2008.SolidworksAdministration