Below are my revised component selections after another week of poking around & reading.
Computer use will be video editing, multi tasking & general everyday use. Very little gaming. Probably no overclocking, tho I wouldn't guarantee it. Budget fairly flexible either way. 1st time build.
Intel core 2 quad q9450-$330
I've read quad is best for video/multi tasking.
Gigabyte ep45-ds3r lga775 intel p45-$150
I change my mind every day on the mobo. Have also considered the Gigabyte ep45-ds3l, ASUS p5q pro, Asus pq5e & Asus p5q. Currently like the gigabyte cause of the numerous ports.
2 or 4 sticks of 2gb 240 pin sdram ddr2 800-haven't decided on brand yet.
After reading all the posts re problems caused by ram & ram incompatabilities this is diffuclt, also, I suspect, very dependent on the mobo you get. I'm considering corsair, mushkin, kingston, a-data, or crucial depending on whatever works best with the mobo I get.
WD caviar re2 wd7500ayys 750gb 7200 rpm sata-$360 (2, for data)
WD caviar re2 wd5001abys 500 gb 7200 rpm sata-$100 (for op systems)
Switched from the se16 for the longer warranty & assuming enterprise/raid drives have a better chance of long life. Not sure if this is wise or not considering they're significantly more expensive.
Visiontek 900241 radeon hd 4850 512mb-$200