I finally got it to work in 3.0!
I installed from scratch in 3.0 - upgrading from CXOffice 2.x wouldn't work for some reason. Had to pick the 'Install all fonts' option in CXOffice setup before you can see most of the dialogs, etc. though.
A few small last caveats...
1) The usreid/password dialog is hidden behind the splash-screen. I know it's there and has focus but not visible because of the splash screen. Just type in your userid, tab, password and hit enter and you are in.
2) You can't just double-click on an item to open it for edit, you have to manually right-click and pick 'Update...' for it to open up.
Everything else seems to work just fine so far. I've had it running for about 2 weeks and all seems well aside from the caveats listed.
Screen-prints available on request.