CR Pro is available in the RMP, at the Hogsoft site, and at other stores like PoserPros.

However, you may not need it, just to move your Poser runtimes. I just moved mine by dragging and dropping, and none of the references broke. You just have to add them to Poser 5 again, the way you'd add any new runtime.

Just don't try to move the main P5 runtime, or the Downloads runtime. Poser wants them where they are. Others you can move around easily. I sometimes move runtimes to faster drives when I need them for specific projects, then move them back when the project is done.