Hey Spud
1) 3d Graphics - just dont! I never use them, you get more usable info in 2D mode I think. If you want to play in 3d best bet is probably to update your graphics card driver? If you continue to suffer then direct contact with Ralph Trickery or the Matrix MB is your best bet. Email Ralph on ralphtrickey at hotmail dot com, be patient he is a very busy boy
2)
http://www.matrixgames.com/games/downloads.asp?gid=317
Click on the top link, you may have to right click "save target as"?
3)Yes, select unit, right click and near top of menu is "divide", choose 2 or 3 subunits when asked. Units can reccombine also through the right click menu when all sub units are in the same hex. Some units cannot be divided and the divide option will be grayed out.
Hope that helps, keep asking questions its the only way to learn!
Regards
W