My Story:
I had not visited the Poser forum for months, and today I happened to look in and for some reason read this thread. Then about an hour later my Poser 7 started crashing, not just crashing itself but locking up my whole system requiring a cold reboot.

So I came back here and took the advice above. It worked (I had installed a new monitor recently and apparently the display resolution preferences must have messed up). I had forgotten how helpful you people can be! Thanks to all of the above.