Well, the ram is pretty good but I found some Patriot RAM for about the same price. That company seems to have a better reputation for making ram so I'd go for that.
http://www.newegg.com/Product/Product.asp?Item=N82E16820220040
You can save some money by cutting out the floppy drive out. You can always create bootable cds using Nero or some program, and if you think about what can you really store on a 2mb floppy. Stick with with some jump drives if you want portable data. They're cheap and you can get a 512 drive for about 20-30. Next, I'd cut back on the video card. You don't absolutely need a 7900gtx, unless your an extreme gaming enthusaist. I'd stick with the 7600gt because its a decent card for about 200 bucks less.
http://www.newegg.com/Product/Product.asp?Item=N82E16814130284
Your processor is looking good. Go FX, if your building a gaming rig. The X2 processors are more for multimedia. Stick with the NEC dvd-burner cuz its like dirt cheap and it performs really good from what I hear. Anyways good luck with your build, and hope I helped.