All good advice.

And don't forget the possibility of a "re-installation solution."

You said of issue 1), for example, that it was new and didn't happen a week ago when you first installed Pro. There is always the chance something has become corrupted, in which case a re-installation (of Poser or even Vista) might fix.

I only mention it because a fresh installation, starting with the OS, has proven to be the only solution for me a time or two.

But of course this should be a kind of last resort. You should thoroughly investigate everyone else's suggestions first.