About the business upgrading, its going to be funny at the University I go to when and if they decide to make the switch over, as over half the computers on campus might have trouble running the Business version, or even Business. Most of the student worker computers only have 256MB of RAM, 32MB GFX card, and P4 1.8Ghz, and they already crawl with XP. Even the ones that we'll soon be using to replace them only have 256MB-512MB of RAM, 32MB GFX card, and P4 2.4-2.8Ghz. And due to the computers age and warranty's, they will not even looking at getting upgrades for them. Hell, half the computers bought 2 years ago are going to have fits, as they only have 512MB RAM and on board Intel video (BLARG!!!!), with the good parts being they have 40GB hd's and 3.2Ghz P4's. Lets not get started about the Laptops ...*Throws Up*.
My Vista test machine is a P4 1.8Ghz, 768MB RDRAM (Rambus), 32MB GFX card, 20GB HD. From my experience, Vista Ultimate runs ok, but in the educational setting it will be interesting as from what I have seen, some professors depending on the field are computer challenged. It's going to be FUNNNNNNNNNNNN. *Sarcasm*