If you truly feel you wish to embark on the Poser 5 adventure, do not install it in the same directory as your Poser 4 and do not remove Poser 4 from your system. If you use Poser with Vue dEsprit, for instance, removing Poser 4 from your system makes the importation of Poser scenes into Vue much more difficult. Also, if you are using Poser 4 with Pro Pack and wish to easily export into a different rendering program, you will need them since Poser 5 has no equivalent method of exporting into Lightwave, Cinema 4d, etc. Such abilities have been promised for the future, but well Also, for whatever reason, Poser 5 refuses to open previously saved Poser 4 scenes at times. After 4 months and numerous SR patches, we could still never figure out any pattern as to why certain scenes would make Poser 5 choke and puke and other scenes opened just fine. So you will want Poser 4 on your system to be able to use any older scenes that Poser 5 deems unworthy of its time. You will also be able to link your Poser 4 runtime into Poser 5 so do not worry about having to reload all of that. It will also allow you to easily keep your Poser 4 and Poser 5 only files separate. You will encounter problems with Poser 5 being unable to find geometries and/or textures. It might allow you to manually point it to the file or it might not. It depends on the mood it is in on any particular day. >>>And what are your overall opinions of P5?<<< Personally, I view it as worthless, not much better than a poorly written alpha and a final piece of evidence that you should trust no one in the software industry. But then my opinion has earned me endless condemnation, flames and now even threats of violence from the CLCDNW mafia. So do read other opinions and make your decision. I cannot recommend that anyone buy Poser 5. All BS aside, I would at the very least wait until SR3 is released and see the reaction to that. I would think that after 8 months and numerous previous service releases they would finally be getting close to the functional program they promised last year. 8 months. Has it really been that long? Time does fly >>>Is it really much better?<<< No. The Firefly renderer is marginally better than the original Poser 4 but was outdated before Poser 5 was released. And if you are using Poser 4 mainly for animation, Poser 5 in its present condition will be virtually useless to you in my opinion. Also remember that the much touted dynamic hair and clothing will not currently export to any other rendering program I know of. The one thing that I will say was a vast improvement was the library structure, but even that has bugs. Go figure. After looking at your gallery (I particularly liked Maya, Destinys Path, ~Classic~ Tribute to Liv Tyler and Liv Again.), I see nothing that Poser 5 offers that would, in my opinion, add to or broaden your talents or make your work easier. A possible exception would be the dynamic cloth. But I think you would spend more time fighting the frustration of working with an unstable and unworthy product than creating more art or extending your talent. Very good work, by the way. Our production tools currently include Poser 4, Pro Pack, Vue dEsprit, Bryce, TrueSpace, Rhino and Cinema 4d. Lightwave is joining the list. Poser 5 will never be on the list. Take care, be well, keep flying. casamerica