My first decent gaming system, I am excited, Tips or suggestions please

[MMAUY]

Well this is what I call my first real gaming rig, might not be much to all of you but I was currently gamin with a P4 3.0Ghz system that I built a while back. So here is what I got.

Mobo: XFX 750a Hybrid SLi with two PCi-e slots and on board 256mb mgpu.

CPU: AMD athlon 64 x2 6000+ 3.10Ghz w/stock heatsink and fan which I hear is of good quality. (My first dual core processor, Ive always had single core. I know get with the times right)

PSU: Antech trupower 1000w

Ram: 4GB of OCZ Reaper PC6400 DDR2 I know its not DDR3 I will likely upgrade to a ddr3 mobo eventually.

Case: Apevia X-Alien its a mid tower but its bigger than any mid tower I have I have a few Apevia X-Cruisers and the X-Alien towers over it. Its a nice windowed case, dual intake fans on the front bezel, dual exhaust fans on the back of the case, top blow hole with fan on the top of the case and on the side window it has a blow hole and fan. The case has a lot of space and many fans Im hoping everything stays cool.

Any tips on how to better my system as far as adding to what I currently have?

Does any one know if Hybrid SLi only works with Vista or does it work with XP also?

Does hybrid SLi work with all Nvidia SLi cards or just some cards?

What do you think of my system? Its my first system that is not a P4 with a gig of ram and a cheap 7600 GS video card.

[ithinkyou5.0]

hybrid SLI works only with vista unfortunatly and only supported gfx cards. i like the rig and with the speed of ur ram i think its 800mghz from memory (dont quote me) you probably wont notice any real world difference from going to ddr3 unless you just want it for e-penis length value XD. its a nice looking case too.

[MMAUY]

Hey thanks for the info that will help me a lot, I have been researching on a few sites but have not found much too helpful. Lol @ e-penis I'm going to have to use that term, yea the ram is 800Mhz I can go to 1066 but decided not to for now, being as I am 4 months from getting married I was under a huge budget and my fiance was not too happy about me building it while we are in the stressful stage of planning our wedding, but a man must game from time to time. Would this system run windows vista ok? I have been looking into vista but its kinda pricey for me at the moment and I have a corporate Windows XP disk from my job a legal copy.

[ithinkyou5.0]

it will run vista really well. and i'd recommend going with vista as even the 32 bit version can use 4 gig of ram where as xp can use a max of 3.5. but if that dosnt bother you stick with xp and save the money for a nice big bottle of champagin for the honeymoon