How to set up application-specific routing table on Windows?

Problem

Suppose network interface 1 (net1) and 2 (net2) are both connected to the Internet. I want application 1 (app1) to use net1, and application 2 (app2) to use net2. How can it be done under Windows? If you need a concrete example of the above situation, consider: A laptop with Windows 7 net1 = A wire…