If you want to try the port forwarding thing I was talking about I found this:
Go to here http://www.portforward.com/
Follow the link for your router model an ad will pop up, skip that(top right) and then click on steam. Not sure if you need the server one or the client. The client one I would think, try both I guess cant hurt. It will then give you step by step instructions with pictures on how to forward the ports for your router.
Dont know if that will work or not...
If this doesnt work you might have to download Hamachi. http://hamachi.en.softonic.com/ I had to use that when my modem was blocking all the games on empire and it worked great. Can definately use that for MPGC. Let me know if you decide to go that route and I'll get it too.
We definately need to get some games in, its been too long.
Sparta! If your reading this rough up a few people at school for their lunch money and get Nappy.
Its ten time better then empires.