v7.3.1 to v9.0 Need little assist plz

[antiphase]

So as the subject states, I'm upgrading from v7.3.1 to v9.0 and have been having some issues I was hoping to get some help with here. Current mac i've installed v9.0 onto is a MBP 2.53/4gb ram 10.6.5.

My Mbox 2 mini (digidesign type), is not powering up via the USB, yet works on the other Mac running 10.4.x with PT v7.3.1 just fine. I tried getting drivers for the MBP but nothing is working so far, I'm also guessing the newer Mbox 2 Mini drivers for the Avid box won't work either?

I've been using DV Tool Kit 2 and was told at AES 2010 that those plug-ins will be available in 9.0. So far none are installed and after installing a few select types for v 7.3.1 - v8.0, new v9.0 PT's crashes at start up. Are all plug in's for PT's v8.0 compatible for v9.0?