The Figures themselves will work without any problems, it's when you start on the morphs & mats that the problems (small problems) start to appear. To start with it's best not to install any new content into the main Poser5 runtime, BUT the Injection poses that come with the 3rd gen figures (v3/m3/s3/freak) have to have the morphs themselves installed there or they can't find them. Dynamics will work on all figures wherever they come from if you can ever work out how to use it (I've had P5 since it came out & I still can't get it right. The Materials room is where Daz really falls down as they totally ignore it in favour of the old P4/PP style of texture settings, it's far more powerful than the old one & gives us all far more control over how the figures will look when rendered, which is a very good thing :)

Windows 7 64Bit
Poser Pro 2010 SR1