Not very hard to do. It should take less than half an hour to do the whole thing. When I did it, I was rooted already. The update worked like a charm. Don't forget that you have to use the Droid 2 Bootstrapper with Gingerbread, instead of the one for the Droid X.bouchigo said:Gingerbreak doesn't work.
You have to sbf back to 2.3.340, then do the two part TBH update to rooted GB.