setting up multiple connections in a single computer

[BigAppa]

I was wondering how you can install multiple connection devices (multiple modems, lan card, wireless lan) in a single computer and select which program connects through which device.

To illustrate, say I have a computer with a couple modems, once wireless lan card, and one regular lan card. I want the modems to connect to remote computers, the lan card to connect to my ISP, and the wireless lan to connect to my local network.

Further, I want certain programs to connect to the internet through my modem connection and other programs to connect through my lan card connetion etc...

How can you this? Any software necessary?

Any help would be greatly appreciated.

THANKS IN ADVANCE!