I have a couple of quick questions:
1). Will MWLL have the look and feel of Crysis? or will it be more like the past online MW games?
2). I have recently upgraded my hardware to be able to even play Crysis. I now have an Intel D946GZis motherboard with 2gb of ram and a Pentium D dual-core CPU with a Radeon HD3870 512mb graphics card running Vista Home Basic.. With this setup, I get a default setting in Crysis of LOW on everything.. What else do I need to do to at least get up to medium settings, and will MWLL be an even greater system hog?
It will be a combination of both. They game IS a mod of Crysis, so of course it will have some Crysis feel to it, but the game play will make you almost immediately forget about that. The only similarities your will consistently see are the prestige / C-bill system.
I myself have an eVGA 7950gt KO Superclocked videocard.
I need an upgrade. I can only play low in multiplayer, medium in single player, which means I need a better card.
Right now, if you have a PCI-E motherboard, I'd go with the 8800gt. it's right on the heels of the 8800GTX, and makes the GTS look like a wimp. I've had 2 ATi card before this, and was dissatisfied with both. They promised so much, but gave me so little.
I'd need a power supply upgrade too. 800 watts are pretty pricey now though, so if I was going to update my stuff, I'd wait around three months when the prices of cards go down, and the prices of Quad cores go down.
In about 3 months time you should be able to give your PC a SWEET overhaul for about 650 bucks.

However, I'm just going to start working and buy a whole new PC. (Student, and I have no job. xD)
I can't say my choices now because everything is going to change in 3 months.
it is rumored that nVidia will be coming out with something new. >.>