Basically what you need to do, is allow the machine to login to the domain prior to login, machine authentication. Windows does this by default, but the Intel Proset, CSSC etc can do it as well. but it does require that the machine belong to the domain you are try to login to. Take a look at the PEAP docuements and walk throughs here:
http://www.dweezlenation.com/
HTH,
Steve
------------------------------------------------------------------------------------------------
Please remember to rate useful posts, and mark questions as answered