well I saw an in-game trailer not too long ago, and it seems to have the same graphics quality as Quake IV. There's a site where it compares your specs to the recommended specs of a specific game. I can't remember the name... check Google.
But if I had to guess, no, I really doubt you'd be able to play. You need more RAM and a better Vid card ASAP!
even if you had a better video card your agp 4x would limit the output.In canada a dual core system gos for about 700 bucks. so in the states it should be alot cheaper.You may have to do some burger flipping but it will pay off.
im pretty sure the min specs will be about 512 ram, 5600 geforce, 1.7 gig cpu, maybe even 2 gig cpu... but your mx 440 just wont cut it, they sell 5600 geforce down here in TX for 50 american dollars....