Why would I want to do this? Simple. I will use my own situation as an example. I am at college right now, and on our campus we have two basic networks for student use: Wireless and Wired. Our wireless spans anywhere from 5-10 Mb/s with random drops when there are many users. The wired connection gets from 10-15 Mb/s and I very rarely notice any lag spikes on this connection. So both of these connections, while fast are unreliable and lets face it, it can always be faster.
I will divide this tutorial into only 2 more steps after this one; the next will be on how to Dispatch the networks and the following step will be on how to create the network.
For this instructable you will need:
A computer with multiple ways to connect to networks (i.e. lan cards, wifi cards, etc.)
Connectify (this program is NOT free. It offers to buy connectify or dispatch or both. We will use both, however if you only want to combine networks, you only need dispatch and if you want to create a wifi hotspot then you only need connectify)