your best bet?
that Asus board is great for stock stuff, not very nice OCer though, but you said no OC
go for 2 gig of ram, just some good PC3200 400mhz ram. Dual Channel is just 2 seperate ram channels at the same time, so thus a bit faster, not much, but it is.
Infinatevalence forgot one card, the 6800gt, get that sucker in PCI-E format, and have fun, that is the meanest card next to the 6800ultra and X850XT.
and then just nab yourself a new big HD, SATA right now is still at only 150, perhaps 300 by the end of the year. get something like the new hitachi 400gb, or seagate, wichever you prefer. Also Western Digital has 10k RPM SATA drives out, the raptor series, they come in 36.7gb and 74.6gb flavors, and are damn faster then most HD's on the market. and are great for gaming and many other things
sound card is now days a must, i would suggest an Audigy 2zs, for features, sound quality, and it not relying on the CPU for some of its own chores. and also make sure you get a decent set of 5.1 speakers, any thing from logitech and kipsch are good, especialy in the $150+ range.
the new PSU's are some mean suckers, but it looks like fortron is the best bang for your buck, to run a newer system fine you want at least 400w, most here are getting 500w plus, just to leave space for expansion down the road. fortron's 500w blue storm for 90 bucks + shipping at newegg.com is damn good, and one of the best of the bunch, and is quiet to boot. get that for a nice big SLI system.
the thermalright XP-120 is right now the king of air cooling, and coupled with a nice 120mm fan, yes thats right 120mm, its very cool, and very quiet, and does so in a prideful fashion
you might want a bigger case to stuff this in, we realy havnt had that many new cases come out that differ from the coolermaster and Lian-li breeds, but if you want tons of room, and plenty of cooling options, then i would take a look at the coolermaster stacker, tons of space for drives and HD's and capabilities for dual PSU if thats your fantasy
mice, well the latest and the greatest mice are these, the logitech MX1000, wich i have, its the epitamy of features and performance combined, its the only lag free wireless on the market, then you have the very common MX510, wich almost every gamer and their dog has, but for a good reason, its damn good, and very fast and accurate. and then the new logi one, the mx518, wich has up to 1600dpi and is better then the mx510 by a bit, but looks a bit better, and has a user selectable sensitivity option. also razor has their awsome mouse the razor diamondback, and that thing is the direct competition to the mx518, and its a close one here folks, its just as fast, and just as smooth but some prefer the feel and size better then the logi one.
keyboards, dont worry about just a regular one will do fine, but i reccomend the logitech elite, for only 20 bucks at newegg, it will get the job done, and you will have fun doing it.
monitors, well we have progressed quite a bit lately actualy, LCD's are now gaming friendly, and CRT's are just a bit better. for your needs i would reccomend the Dell 2001FP, its a damn fine 21" LCD monitor, and even though its from dell its one of the best on the market. now if that is a bit too big Hyundai makes a wonderful 19" that will blow your socks off, the L90D+, and i have personaly used this monitor, and i love it, and it has no ghosting or delay at all. a truly enjoyable experience.
and i think that is about it. feel free to ask any questions right here, no need for you to go off and hunt when your answeres are right here, all you have to do is ask!