Have you updated your video drivers recently? Odds are poser needs the latest drivers to run properly.

Also, did you install poser 7 into it's own fresh folder, or did you install it over the top of poser 6? You do not want to every over write older programs with newer versions. Always start with a clean install... also you can have both poser 6 and poser 7 installed in separate locations without any issues at all.

Way too many people take way too many things way too seriously.