I3-330m vs core 2 quad

Better in what regards?
Power consumption - I3 will give you longer batter life.
Processing power - Q9100 has a passmark score over 3400. (330m is just over 2000)
Gaming - which has the better graphics susbsytem? Probably the I3 if ythey are both using integrated graphics. I dont know if you'll be able to install your graphics card into the new laptop but check the specs to make sure its not a step down from whatever comes with the laptop.

Hi newcomer and welcome to the Tom's hardware forum.

1- The C2Q is a quad-core, the i3 is a dual core. Win the C2Q.
2- The C2Q is a 65nm processor, the i3 is 32nm processor, so, less power , less heat, less voltage. Wind the i3.
3- The C2Q don't have L3 cache memory, the i3 have 3MB of Intel® Smart Cache (like a L3 cache). Win the i3.
4- The C2Q is a "old" processor (Q3 2008), the i3 is new (Q1 2010). Win the i3.
5- The C2Q is better for games, that the i3. Win the C2Q.

i3=3 against C2Q=2. If you don't plan install heavy games, go for the i3, or save a little more money a go for a i5.

Ehm when u say "heavy" games... can u give me a example?
i just bought a alienware with i3 330. and i am planing to play Bad company 2 and world of warcraft.

is the i3 330m good enough for tht?