Purchasing a computer help...

[AChimp]

For video editting, you'd want at least 1GB of RAM. I think.

I'm not sure of the prices in the U.S., but the hardware that you've listed seems like it would cost more than $1000... The CPU itself is listed at C$400 at the cheapest place in town, which translates to about $300 US.

EDIT: Hard drives are about $1/gig.