Can't log on to Advanced menu of BT Home Hub

Dear all,

I wonder if anyone could help with this please and prevent me from entering a queue waiting to talk to BT!

I have a BT Home Hub version 1.5 running firmware release 6.2.6.H but I cannot log onto the Advanced menu using admin as a user name and as a password, or using admin as a user name and my wireless key as a password. I am running Windows Vista Home Premium edition with Service Pack 1, and Internet Explorer 8.

Many thanks!