Ok just came back to check this thread hehe, Ill get talking ****e shall I.
And we then come to problems.
OK your system is pretty dated but its not that bad, I have seen worse.
There is 2 options I would go with, people can add on to this.
You can go with Option A
Upgrade your GPU to something along the likes of a 9600GT
Can gurantee that PSU came with the case so its for the bin as well
This is cheap, not exactly and upgrade and would be simple. This would also pretty much bottleneck your GPU as the CPU is ancient, Mobo and DDR400 ram is pretty damn outdated as well.
Or option B
Ditch the motherboard, graphics card, CPU, PSU(Power source), Ram. Start clean and if your case is big enough you can keep that. If not you want to start off with a nice spacey, nooby and simple case. Antec 300
if you think that is ugly....Antec 900
although the 900 needs some love and should be properly cable tidied to get good airflow.
Whats your budget here, I understand you were going for an alienware, so you either clueless or have the money
I am more into Nvidia so I will give my view on that.
Already mentioned a case so will move on to Mobo,Nforce 750SLI
In the mid range price for Mobos, DDR2 Ram and SLI support as well as Phenom/AM3 Socket. Also nice built in chipset cooling and is not too chunky either so easier to handle.
LOTS of people prefer Intel but I do not so meh, dunno why I like nvidia cards with AMD's, I used to run them back when Nivida never kissed Intels ass and ATI never kisses AMD's ass. So with that said.Simple Best Bang For The Buck, AMD Phenom Quad
Good thing about this CPU is it is very easy to over clock and runs the fastest in its price class. Needs a good PSU to run.
To start off with RAM I would go with either 4GB or 4GB(lolwut?), with the 4GB(The first one) I would run x4 1GB sticks DDR2 800mhz, for the 4GB run x2 2GB DDR2 1066mhz. Second option is rather pricey so first off I would go with 4 of these G-Skill 4x 1GB DDR2 800
Now GPU, depending on how rich you are this is the hardest choice, although from the start of this post I was already recommending the Zotac GTX260 216 Cores
Now IF you have the money, get a Pair of these if not 1 will be good enough trust me, I run 1 on this computer and its a very good card. Just whatever you do, if your buying them NEVER EVER EVER buy the 192 Core shader version, get the newly 216. Its the same price fot a 3-4% increase in performance.
If your really really wanting to go hardcore you could get yourself a GTX285 or 2 but then I would have to go back and get a better mobo.....after me doing hours of searching for a decent one