Couple years ago I busted up my Shimano Internal Hub 3 speed that was on my Transit Kenan. I put the kenan in the shed, and haven't thought much about it since.

I recently ran across it, and want to turn it into a commuter since I'm moving to an area where I can commute to work. I'm wondering how I should go about replacing the rear wheel. How does one go about figuring out sizing, etc? The kenan is a 26 inch frame, and its got disc brakes. What tools would I need to put together a wheel I order online, with a disc, freewheel/cog? Can you order a complete wheel online?

Just looking into my options here. Obv. I can go down to the local bike shop and have em do it for me, but I want to know my options, and keep it on the cheap side.