I am wanting to configure a small Cisco network at home so I can practice and learn the commands for my CCNA. Our company has extra 1700 and 1800 series routers. I have a cable Internet connection at home and was wondering about the module cards that are installed in our extra routers. They are all for T1 lines. Will these routers with a T1 module card installed not work with my cable Internet connection coming into my home? I have searched high and low for 10/100 cards that will mount into the 1700/1800 series routers and found none. I am sure its because most businesses use at least a T1. Any help or suggestions would be greatly appreciated.