does anyone know were to get the mod to integrate the .net for members like when they sign in they use there messenger to sign up

That is a nice idea, never seen that before.

That is a nice idea, never seen that before.
I have seen it on xbox.com when you go to there forums
and another dont remember

This would be a great feature.

It seems xbox.com uses ASP (makes sense...). I'm not sure if that has any native functions for passport?

You'll need some form of integration between PHP and the ASP.net page but:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpconThePassportAuthenticationProvider.asp

Might help