Let me tell you about my problem. I have a BMX which has a bent rear hub. The part where i put on the pegs is bent at a 22 degree angle. I want to get a new one, but I don't know how to install one. Please tell me how to install one.
All you need to replace is the axle. If you're mechanically inclined just disassemble it, laying out the parts in the order they came out.
If it has a coaster brake, it's a little more complicated, but still fairly simple.
If you don't feel up to the task, let the Bike Shop do it. Shouldn't cost more than $15 or $20 USD, which is about the same price in EURO's.