PARTS PREFERENCES: Parts that I plan on getting are:
CPU Intel Core i5 750 2.66ghz Quad LGA1156
MoBo ASUS S1156 P7P55D Pro Core i5
RAM DDR3 4GB G.Skill Ripjaws 1600mHz PC12800 CL8 (4GBRM)
HDD Samsung Spinpoint F3 1TB
Video Card Gigabyte ATI Radeon HD5770 1GB PCIe
Case Antec Nine Hundred 2 Black Case (No PS) or Antec 600 or Antec 300
PSU Antec TruePower 650W TP-650
Optical Drive LiteOn 24x DVD Writer SATA Black
Monitor Samsung 2233SW+ 21.5"
SLI OR CROSSFIRE: Maybe in the future
MONITOR RESOLUTION: 1600x900
ADDITIONAL COMMENTS: Any improvements? Advice regarding which Antec case I should get?
If your budget permits, I would stay with the Antec 902 or go with the 300. I'm not a fan of the looks of either the Antec 200 or 600. I would go with Win7 Home 64-bit as the min. OS for any new build.
I have not seen one without a side window. It isn't a big deal to have the window covered. If you want a similar size case to the Antec 902 without a window, look at the Cooler Master RC-690 case. It is cheaper than the Antec 902 and not much more than the Antec 300.
jsc was talking about an internal motherboard speaker, so you can here beep codes. jsc wasn't talking about your case speakers but it is good to know you didn't forget those.
I would highly recommend the Antec Mini P180 case if you can get it cheap and you can find a micro-atx motherboard. Newegg.com, in the U.S. has it $54.99 after rebates. I personally own one, it is the most silent case I have ever witnessed. It also runs very cool. It has a giant 200mm fan on the top of the case and a 120mm rear fan.
@ techmo: the stores that I'm getting my parts from don't have the mini speaker, the 5.25" case speaker was all I could find. :S
If they don't have the mini speaker I linked to, don't worry about getting the speaker you have listed. It isn't the same thing and won't work. The mini speaker is only need for troubleshooting your build, so hopefully you will have no build issues.
@redgarl: Very solid build you put together and should be considered if the price is low enough below the i5 750 build. At the OP's resolution of 1600x900, the ATI 5770 is more than powerful enough. The ATI 5850 becomes "overkill" for that resolution. Again, your build is a good alternative to the OP's build.