How do you replace the clutch and throw out bearings?

What kind of vehicle? There are different transmissions, and different setups. For example, front wheel drive transmissions usually have to be supported from above the engine to remove the transmission. Then the clutch, and throwout bearing can be replaced. Caution!!! The engine being supported is NOT the only different thing you have to do. So reply with your vehicle Make, Model, and Year. I will be able to help you.