If you have poor soldering skills and afraid of destroying your xbox don't do it.
But if you're the type of guy that likes to learn and take challenges on - go for it.
Before you start though, as others have said, learn how to solder. There are plenty of links on here to soldering tutorials.
Once you get your skills down it's not hard to do a RGH if you can read carefully and follow a tutorial. (I used FIB3R's Glitch guide) Here's a quick link to the
tutorials
Just make sure you have decent equipment - It will make things much easier for you.