Windows 7: Windows 7, Trying to cross Workgroups

In my Business network, with 2k and xp, I never had a problem connecting to a computer on the same ip network....but different workgroup. I use different workgroups for office computers vs. production computers.

Now I have a Windows 7 box, and I cannot get by the "Network" password pop up when trying to connect to a computer of a different workgroup.

My ip addressing has all the computers on the same network.

Any ideas?

Thanks

Kulgan