Please start by searching for 24v swap. Much of this information is already posted here on vortex.
This is the exact responce I wrote yesterday in the "R32 swap in corrado g60." thread four threads below yours. Your question is pretty vague, it sounds like you havent done any research at all. Dont take that the wrong way, trust me I've been in the same spot you are. Just try and read as much as you can first and see what questions you have. Then start a thread and ask them. PM me if you have any specific questions. Ill try and help as best I can.