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. 

>>41
Yes, mutation in replication would probably be the most common.  I assume it is possible that certain components of the nanomachines could fail too, and alter its actions, i.e. mutate it.

Hm, how about having the nanomachines reproduce by contacting a partner, compare their structure and replicate if they are identical, or destroy each other if not.  It could keep mutation rates down if it worked, but anti-faggots would be pissed off.