My approach is basic, I have a single 'core' runtime set up on the main drive. Thats all the stuff I use on a regular basis and is shared by all versions of poser installed on that machine. It's backed up regularly onto DVD and 2 mirrored external drives. Purchased/free content is also stored in that way, in named folders like hair, transport etc. All in CD sized folders, so it's easy to find things and to backup. Then when a new version of poser comes out/drive crash etc, I simply copy the runtime onto that machine or install the stuff thats needed. If new content is added and it's not needed after a few weeks, then it's easy to simply view folders by date and delete it. Which keeps the runtime clean and saves drive space. BTW - Bobs right about P3dO - I use the old free version and it's just so useful along with a collection of 3dDimensions tools.

Pinky - you left the lens cap of your mind on again.