Originally Posted by
SouthernBelle
There is an easy trick to putting the back wheel back on, but I don't know if I can explain it. Stand on the other side of the bike from the cassette and derailleur. Lift the bike with your left hand, hold the wheel in your right. Slide the wheel in place, then use the end of your skewer/quick release to snag the lower part of your chain, pushing it down. Then pull The wheel back to the derailleur. At this point the derailleur is blocking access to the dropouts. Use the end of the skewer, or your hand, to push back the dangling part of the Derailleur where your chain squirrels through like an 'S'. That will give you access to the drop out. pull your wheel back and up to the dropouts, making sure it's straight so it will slide between the brake pads.
I know that's about as clear as mud, but once you've done it, or seen it done, a little light bulb will flash on.