At the most on Intel's side, E5200. Don't need anything above that. Though I'd imagine the E3200 would be plenty too.
Something like this would do:
NCIX.com - Buy NCIX Value Bundle Deal Intel Pentium Dual Core E5200 Gigabyte G41M-ES2H & Kingston 2GB HyperX RAM - G41-E5200-2GB In Canada.
I'd probably toss in a HD4350 as well since I'm not too sure how good Intel outputs HD.