Need Advice on ~$450 Budget Everyday PC

APPROXIMATE PURCHASE DATE: Within the next 2 weeks or so.

BUDGET RANGE: ~$450 after rebates

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: Minor video editing w/ capture card, Sims 3, MS Office, Photoshop/Illustrator

PARTS NOT REQUIRED: Keyboard, Mouse, Monitor, Speakers, Windows 7 - These will probably be bought locally

PREFERRED WEBSITE(S) FOR PARTS: Newegg.com
COUNTRY OF ORIGIN: Hawaii, US - no free shipping  

PARTS PREFERENCES: No Preference

OVERCLOCKING: No
SLI OR CROSSFIRE: No

MONITOR RESOLUTION: Most likely 1440x900 or 1680x1050

ADDITIONAL COMMENTS:
So I'm trying to save a bit on crazy shipping costs to hawaii by adding my friend's computer to my order and was looking for advice on what kind of parts to use. The $450 budget may seem pretty low but i figured it would be cheaper than getting a dell (or is it not worth the trouble?). He is not a hardcore pc gamer so wont need a crazy GPU, though his wife will probably want something that will run the Sims 3. The most he will be doing is minor video editing of his crazy throwing knife kills in mw2 that he says he gets but no one sees or believes him.

A couple questions on the CPU/Mobo, RAM, and Vid Card.

Not sure on how many cores would be needed, but anything cheap will do.

Would 2 Gigs RAM be enough for Windows 7?

Could someone recommend a decent cheap vid card that would be good for just sims 3, video editing and photoshop/illustrator. Or would an integrated vid card be good enough for this?

Anyways, could someone recommend a build around $450 after rebates.. Thanks.