How to remove rust from gears? I have a 2 year old Diamondback bike with gears that have already rusted while living in the desert southwest.  I'm not sure how or if they can be cleaned.  Also, was something I should have done to keep them from rusting?  Any advice would be helpful!  Thanks
By "gears" I assume you're talking about the rear sprockets, or perhaps the smallest front sprocket, since they're about the only "gears" that are made of steel.  And they shouldn't get rusty if properly oiled.

A little rust won't hurt the sprockets.  Just oil the chain with good chain oil and it will transfer to the sprockets fairly readily -- the rust will wear off with a little use.  More worrisome is the chain itself, since a little rust can hurt a chain, causing "frozen links" and accelerating wear.  Again, oil it with proper bike chain oil.