When your computer is only 1 year old , you don't have to change everything if it's a selfbuilt one.
In a selfbuilt computer you can change only the parts that are outdated.
Like CPU and mainbord and RAM.
The parts of the old computer can be placed in a cheap case with a smaller Hard drive.

Trough a local network you can use some thing from the other computer like DVD burner, ...
For games you can make an image of the CD/DVD and place it on the hard drive.
And then you run a CD/DVD drive emulator, works most of the time faster the nthe orginal CD/DVD drive.
Since your hard drive is faster and doesn't have a spinup time of seconds.

This dell that you talked above it's a great computer, but it has a great problem. They used something called "closed archtecture", that's difficult a lot when you wanna make an upgrade. I have an example, I have a COMPAQ PRESARIO 5000LA, on the year that I buyed was the powerful PC, but later when the years was going and I'm needing of an stronger computer. I decied to make an upgrade. I buyed 1 512Mb ram card, and I tested on PC, but the mainboard don't detect the new card, and I gonna again on the seller and I had take another card, so the mainboard don't detect again. So I take the PC to the store that I buyed and the sailsman tried a lot of memorycards and the mainboard don't detected, and actually them still 64 Mb ram. So... What do I mean? I wanna mean that if your gonna buy a PC it's recomended that you buy the pieces one to one, cuz it's a great chances to get an great compatibility. But I have nothing against Dell, Compaq, HP and others pc manufacters. But it's harder when you wanna make a simple upgrade on computers of these vendors.

So you wanna an perfect computer for you right?! so the features that you mentioned it's very interisting and powerful, but it's inerisng you made an offboard PC and a great device for your next computer it's an Nvidia GeForce 512mb, will get better w/ AGP slot, and a Intel Pentium 4 or an AMD ATHLON XP they're very good on color treatment.

I hope that helped you!!

what video card do you want?

Thaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaanks i recommend xps420

I'm not big on Intel. I'm more of a AMD person. I would think that the kind of computer i have would suit anyone but no most people have to get more for what? I need more ram. Most people say, well Windows it self will not reconize over 3 gbs of ram. In need a better processor, really all you need is a low dual core amd which is nice, now the video card is what you need, a nice video card solves almost every issue in gamming. I want to play crysis but my on board video card is too low. i have a 6200 Nvida, I need a 8800 max. Nvida and a min. of 6600. Now like i said video cards are the hardware that you need to worry about spending money on.