Your CPU is pretty outdated but on top of that for video games I recommend at least 2g of VRAM on your video card. If you can afford it get a 4g vRAM card. Trust me, that 4g vRAM comes in REAAAAAAALLLLLLL handy. And before anyone says it, yes, there are games that will make use of that much. I've actually almost hit 4gigs of vRAM use on my Skyrim game. Now as to this MMo, 2 gigs of vRAM should do you fine but that 1gig card you got, it's gotta go. As to the CPU, come on man, cough up some dough and at least, I mean at the very least get an i7-2600k, they cost about 200 bucks and offer amazing performance at an economy price. Unfortunately if you do that you'll need a new mobo and ram sticks cause as far as I know the i7-2600k needs an LGA 1155 mount and they all use DDR3. It's definately an affordable route to take though for a fairly good gaming rig that would blow the current one you have out the water.
Also something I forgot to mention on my other post about your vRAM post.. I have no idea whether or not you've fully modded the [censored] out of Skyrim but my 1GB DDR5 XFX 5750 runs Skyrim on Ultra just fine...
Also! For the OP
If you want a good computer do not listen to people trying encourage you to buy the latest Tech.. do not do it.. first of all tech goes out of date faster then anything..
Also look into other companies besides Intel or Nvidia for products.. Hell I just made myself a new gaming rig which has a 3.8Ghz six core processor from AMD for $139.99... now yes I will admit that Intel AND Nvidia have better
TOP of the line products however for price over performance AMD can not be beat.. hell an intel i7-2600K which mind you is a wonderful CPU is just as good if not a very tiny bit better then my CPU but you'll spend about $100.00 more when compared with a GPU you'll get maybe an extra 5 frames per second
MAX out of that 2600K over my CPU..
Do some research and look around find products in-store that you can find a price point at and which has the hardware you want or close to it and build your own. Building your own is much cheaper and will in the long run, stay to date longer then buying a pre-build PC. Mind you if you pick a price point in-store you'll either spend less with the same hardware or spend the same with better hardware so be careful what you choose and
DO NOT go top of the line, it just isn't worth spending hundreds of dollars more for 10 frames extra or even 20 frames extra.