How to live forever?

And by forever I mean at least 200 years.  Maybe 1000 if I'm lucky.  These anti-aging supplements only do so much to prevent oxidative damage.  Growth hormone injections might keep you going for a little while.  Beyond nutrition I'm looking for a way to make DNA ignore that cells have to split a limited number of times in one life.  I don't want my cells to stop splitting, but I also don't want cancer. 

>>31
The nanomachines rebuild themselves as long as they do not mutate.  I assume I'd need some kind of program (or several for redundancy... hm, I'd need something that checks those programs as well... I guess it's a tree of checks that eventually ends in my brain) that checks for and eliminates mutated nanomachines.