I used to have a guy that did these kind of things for me, locally. I'd give him a few bucks, or something in trade; and he'd be happy to help me out. He repaired and modded my original XBox. He sold me a 360 he repaired for only $100 when they were going for $200-$350 (depending on model), which I still use to this day. And he installed a mod-chip in my Saturn for me.
But then I went over to his house one day to hang out, and he had this huge Nazi flag hanging up in the middle of his living room. And he was serious about it. So I just stopped going over there after that.