We had two leaking pipes that needed repair, and used these things to fix them:
http://www.homedepot.com/h_d1/N-5yc1v/R-100638089/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053 Turn off water, cut the pipe on either side of the leak, and shove this between the two cut sections. No pvc cement, no soldering, no glue, nothing. Just stick the pipe in each end and it's good to go.
My neighbor recommended them. He does a lot of residential repair work, and they rock. From 0 to plumber in a few minutes. Fixing your own problems - priceless.