with that many questions about setting up gears( and not even the hardest part). I have a feeling that you should have it done. Buy the time you gather the specialty tools and the knowledge to do it right the first time. It may save you money in the long run. Do it wrong and you will buying much of what you need all over again.
You can do it , you will need to learn how and buy the tools. i really do not think anyone here is going to do a step by step. since there is a wealth of this on line.