Well anyone can replace or clean a laser in a dvd drive :p The past two xbox's I fixed and resold were simply just old samsung dvd drives and the rubber band for the gears got stretched out. Throw it in some boiling water and tadah, its good as new Gotta love turning $40 into $100 with some boiling water. If your box is having any kind of trouble like that though I'd definitely suggest cleaning the lens, or even adjusting the dvd pot if you still have problems, should extend the dvd drive's life for a good bit longer most of the time.
It's not the religion that causes wars, it's the men who use religion as a means to control people that do. They call me tater salad.
Well I am Going to be Turning 35.00 into 145.00 =D I love doing this. Then I am going to do it again =D And again, and again. Ugh such an easy Fix you Little RRoD