Herm I have been away for the weekend shooting up rebels and drinking heavily. I will try to answer some of your questions the best i can. First of all let me congratulate you on what will soon become a new obsession fo you. i don't think you will ever totally let go of the PC world because you are after all a guy who likes to tinker. I wish you had asked prior to buying though because I would have suggested that you wait a bit. The newest version of Apple's OS will be out very shortly. perhaps as soon as the end of this month. You may have to shell out the cash for it now.
1. If you are using I.E. dump itt right now Herm. It's no longer being updated by The Great White Dweeb Satan. Microsoft has packed it in. I actually just checked safari and noticed the same thing though. Hmmmm interesting. This is the first full version of Apples web browser though so I am sure this will be rectified. Probably with the release of Panther (OS 10.3). I use Camino as my web browser and find it very good. Blocks popup and loads fast as hell with a broadband connection. Little flakey with frames on occasion. I placed the link down below.
http://www.mozilla.org/projects/camino/
2. Who knows. You've used a p3's and p4's so you be the judge and let us all know what you think.
3. There is a flap that is along the bottom front of the keyboard. You can pull that backwards to add elevation to the keyboard.
4. If you don't get the update for UT your mac will run what it calls classic in order to run UT. There is an update and I will send it to you. it's not an official update but it does work. Make sure you've downloaded all the prior patches for UT before installing this one.
Hope this helps.