The "jitters" that are causing problems stem from AMD dual core procs. There isn't a problem with Intel.
The DVD is going to be very hard to find, even on ebay. It's value is that you don't have to have the DVD in the drive to start BHaH. CFS3 or CFS3:Battle for Europe are both ok to use. With the CD version, Disc-2 will have to be in the drive to start BHaH.
You can install CFS3 or just pull what's needed from the CD. It's your choice. To make it easier, go here for the full install procedures:
http://www.overflandersfields.com/FAQ.htmI'm presuming you're running an Intel proc and since you have a 8800GT card, you'll need to really tune or tweak your config and video settings to avoid in-game stutters. Those are usually caused by the game's sliders being set to high and some other factors, but not the Intel proc. Unlike RoF, CFS3 and consequently BHaH utilizes only one core.
Check out the FAQ's on the above link for video card and config tweaks.
Cheers,
plug_nickel