forcing programs to use a specific NIC

So I have 2 sources of internet.

DSL and Cable.

However, the Cable provider only gives you around 30 GB per month of bandwidth.

DSL is unlimited bandwidth.

I want to be able to use 1 or the other connection for different programs.

E.g. My Download Manger would use the DSL
P2P programs and torrents would use the DSL
FTP Software would use the DSL
Surfing the net would use the Cable.
Control a computer remotely would use the cable.
Mail retrieval would use the cable conneciton

The purpose of this is just to make it so I can browse and do "non-bandwidth heavy" tasks with the fast Cable connection.
As the other connection is usually saturated by bandwidth heavy activites.


Currently my setup is

1 Linksys WRT54GL, using MLPPP via Tomato Firmware (Bonding 2 DSL Lines)

Each DSL Line using its own modem

Tools I have are

A Spare old laptop running windows XP
A Spare router (Linksys BEFW11S4)
A USB to Ethernet Adapter

Is there any way to accomplish what I'm trying to do?

Duckling said:

So I have 2 sources of internet.

DSL and Cable.

The purpose of this is just to make it so I can browse and do "non-bandwidth heavy" tasks with the fast Cable connection.
As the other connection is usually saturated by bandwidth heavy activites.

Is there any way to accomplish what I'm trying to do?

There was a similar, though not exact, topic discussed a while back. There is more than one way to accomplish things, depends on the direction you wish to pursue. Here is the link to that thread:

Need assistance with dual network config

Hope this gets you started, at least.

Cheers

Robert