WiFi with IAS at Logon

Hi,

I'm currently trying to set up a Wireless Network using a Netgear WG302 WAP
and a Windows 2003 Server with SP1 running IAS. I've created a GPO to push
out the Enterprise Root Certificate to the laptops and to configure the WiFi
settings to use WPA with TKIP.

This works fine and allows me to connect, but I cannot seem to get it to
work at logon time. In other words, when I press Ctrl+Alt+Delete and enter my
Domain credentials I get the message "The Domain is Unavailable".

I am using machine authentication, with PEAP-MSCHAPv2. Is this correct and
can anyone give me any pointers as to what I am doing wrong?

Thanks,

Scott Stevinson