Vista - Cant connect to network using PPPoE

Hi all,

I connect to the internet using a broadband ADSL line which requires
username and password. The type of connection is PPPoE. Windows Vista RC1
correctly recognises that I'm using PPPoE and displays the dialogue box for
entering the username and password. But it fails to connect. The error
message is of no particular help - it just says "Could not connect". The
status shows that the connection from my machine to the ADSL modem is active
but to the internet is inactive. The configuration worked well on the same
machine with Win XP Pro. Could someone please help me in configuring the
network? Is there any update or patch from Microsoft for this problem?

Thanks,
Aamir