Need help with getting my chain on the rear Derailleur
 

Need help with getting my chain on the rear Derailleur. I took off the back wheel and now i need to get the chain back thought the back Derailleur. I know i should know this but i don't. Could somebody please explain to me the proces or give me a link to where it explains it

If all you did was take off the back wheel, the chain should still be in place in the derailleur and all you need to do is make certain that you get the right stretch of chain on top of the gears while putting the tire back in place. If you did somehow get the chain out of the derailleur, it just threads through to the right of the top pulley and left of the bottom pulley. With the bike upright, pull the derailleur down a little bit so that it's hanging at the position you normally see it in and it may make more sense.

http://upload.wikimedia.org/wikipedi...derailleur.jpg