Prophecies just said MaxRetopo, and Blender as well Topogun are one google search away from the official site. http://www.scriptspot.com/3ds-max/scripts/max-retopo
Im stuck in max 09 here though. If these scripts work well I wouldnt bother trying one, but something tells me it wont be very intuitive. I can't believe theres no free apps out there, you'd think someone would have rushed to it. Nowadays theres a free basic alternative to everything.