I dont know if you guys know this already, but you can play certain modem games through broadband! The program makes you computer think it has a connected modem.
All you need is a program called TCP-COM
http://www.taltech.com/products/tcpcom.html
Here's the instructions on how to work it:
http://www.planetcnc.com/features/techtroo.../tibdawnOverTCP
The instructions are made for Command and Conquer Gold, but it's been confirmed to work with DOS versions too.
This is interesting and I think you guys should try it out!