Besides rust removal threads here on BF, BicycleTutor.com has a rust-removal section.

http://bicycletutor.com/

Link for rust removal:

http://bicycletutor.com/rust-removal/

Be careful with steel wool, a tooth brush might be less abrasive. Also, Oxylic acid baths seem to be popular amongst some BF members. There is alot of talk about it in different threads.