Raptor is a waste of money.. Same goes for quad (personal opinion) Why sound card? Try on board first and if you won't like it you can upgrade it later. Your original component selection is good just go with (G92) card and you will be all set. Good luck.
The raptor, I agree with. Just go with a good priced SATA hard drive that fits your budget.
As for the Q6600, its no waste of money. I have two of them. I debated on going with the E8400, which Im sure I wouldve been happy with for gaming but I have gotten into other unforseen things such as folding@home and they have a program that fully utilizes all 4 cores and I outscore any dual core cpu out there.
I liked it so much I bought another to go in another case to double up on the scores.
You will be happy with either choice tbh, just go with the best priced chip between the two. If you are going to be stuck with this build for a long time then go with the Q6600. I feel things will be better utilizing the multi core architecture and you will see better performance from the Q6600 if that happens.
As for the sound card I would stay away from creative. I ordered their top of the line fatality xfi and it made random crackles and pops in vista. They have nice cards crappy drivers. Check out their forums if you don't believe me. I would recommend ASUS Xonar DX 7.1 Channels PCI Express Interface Sound Card if you want to get one. It does require a floppy power cable to give it power though. I
Im just glad you stayed away from nvidia based nighmare motherboards. Lets just say I am out ALOT of money because of the crap boards they sell.
The GT is a better card for the money, even though I like my gts, you might only need a good 550 watt supply and it might save you some money over the ocz 650, even a good 500 watt if you only are gonna use 1 video card
XP vs Vista for gaming - no significant difference in peformance these days. XP SP3 vs Vista SP1
You can overclock both the CPUs on the stock HSF - a bit. Let the core temps guide you on how high you can go (15%? 20%?).
Overclocking the Q6600 to 3.6Ghz is possible with a good aftermarket CPU HSF but the performance difference between 3.6Ghz & 3.2Ghz is very small (or none at all) depending on your game with high quality graphics settings & AA/AF on. In fact most games will be GPU bound and that usually levels the performance between CPUs, overclocked or not. Some examples: Unreal Tournament IIICrysisLost Planet
Either CPU would be a great choice for gaming. If you're interested in overclocking but not spending more you could get E7200 2.53Ghz Wolfdale CPU $132 and XIGMATEK HDT-SD964 CPU cooler $32 and easily OC the CPU past E8500 ($278) stock performance.
Upgrading to the 8800GTS (with a bit of an overclock) should give you a better performance boost than a max overclock on the CPU.
Of the monitors available @ NCIX these 3 caught my eye LG L226WTY Samsung 2220WM Samsung 2253
The LG looks especially good at the NCIX price. I'd rank the monitors LG L226, Samsung 2253 and then Samsung 2220
And the COOLER MASTER Elite 330 is good case for the price - see the link for good views of the case.
just be sure to do alot of research on the monitor. whats good for one person isnt always good for another.
atleast back when i bought my 22" options where very limited because of companies selling the same monitor w/ 4 or 5 different panels... (samsung did this just under 3-4 months ago, ive stopped reading after i bought my viewsonic)
not to mention design and functionality (alot of 22" monitors arnt as movable as CRT's. what i mean is u cant really pivot them up down left right to find the perfect angle u want to watch it from. this depends on the monitor tho, some are simply better than others.) i have pieces of cardboard propping my LCD up on one end because my desk isnt entirely level.... and the monitor cant adjust for that.
i suggest reading lots of reviews, and always going with the one w/ the best reviews based on people doing what you want to do.
also make sure u have a good warranty. troubled monitors seem to die within a few months and sometimes in a year. If you can, buy from a local store, and get a warranty from them. if you buy online, u'll have to send it (and pay shipping) back and forth. shipping on a monitor can be alot