XPS 630 - Will I be happy

Just wanted to know if I am going to be happy with the following gaming computer. Do I need more? Less? etc. I am looking to play the newer games with High Resolution. I dont want to suffer from Frame rate problems or slow anything really. Does the following system meet the standard of todays more demanding games?


XPS 630, Intel Core2 processorQ9550 (2.83GHz,1333FSB) w/Quad Core Technology and 12MB cache
Black Bezel Chassis
4GB DDR2 SDRAM at 800MHz
Dell USB Keyboard
Nvidia GeForce 9800GT Dual Scalable Link Interface
Serial ATA RAID 0 With Dual 250GB Hard Drives
Microsoft Windows Vista SP1 Home Premium Edition, English
Dell 2-Button Optical Mouse
16X DVD+R/RW
Integrated Audio

If I have two graphics card, do games automatically recognize this? do I need to change settings? Sorry for the noob questions, I am just really excited

Sounds good, plenty of grunt for modern games. 4GB DDR2 800 is good there is faster (1066) but that really comes into play when overclocking. The 9800GT is pretty good but I am in love with the ati 4870. (Not sure about SLI settings) Raid isnt really necessary as the performance gain is hardly noticeable, unless you want redundancy (raid1?).
Check the PSU is a good un you want grunt, clean power delivery and preferably nice and quiet, same goes for your cpu cooler.
I would also get a better mouse, something like a razor.
Dell are pretty good and at least if it breaks you can send it back.
I built my own for £1200, It is very quiet and nice and grunty too.
I went for an E8400 (OC'd to 3.6), a Noctua NU-U12P CPU coooler, an ATI 4870, A 1TB HDD for data and a 500GB for OS etc, Asus P5E X38 mobo, A Coolermaster Silent Pro 700w psu, 2x2gb Crucial 8500 Ballistix and a Razor Krait (although I find it a bit small for my hand). Plus case etc and all from ebuyer who I find very good.
Whatever system you get im sure you will find it a massive improvement and will have no issues with current games, Enjoy And check out Left 4 Dead, im counting the days.......