[Kana]

8800GT is a good vid card for the money. Will easily play just about any game now, and that may be in the near future. Its only list of things to buy. Plus it looks like from your Motherboard, you can upgrade to a quad-core down the road if you want.

Round cable upgrade is probably the cable attached to the hard and optical drives. They are usually a flat 'ribbon' cable, and take up alot of space inside a PC. The round cable takes up less space and probably allow more air to circulate and such.