windows 7 roaming profiles in server 2003?

My boss is trying to upgrade to win7 for users but leave our server 2003 alone. I'm trying to test with setting up a test user machine in win7 and no matter how I change settings, I cannot get the local pc to load the roaming profile. It sees the network drives and requires the password set in active directory on the domain controller, but it will not link to the roaming profile. I've tried the .v2 extension on the profile and in the profile path with no luck.
Is there a tutorial somewhere for settings that will allow this to work?
Thanks for any help!