am i running too much poker software?

[muckyouraces]

I upgraded my computer about 6 months ago.

I have a intel dual core cpu 6600 @ 2.4ghz
I have 2 gb of RAM.

If I run one poker site with Poker tracker, and PA hud, it works fine. When I run 5 different software programs :
(1) Bodog
(2) Dogwatch handgrabber
(3) Poker tracker
(4) Poker Ace Hud
(5) Absolute Poker

My computer crashes. When I upgraded my computer, I thought I did enough to run all this stuff. Is this too much for any cpu? Would a quad core make that much difference? Do you think it could be my graphics card? I have an NVIdia GeForce 7300.

Any help or advice would be appreciated. thanks