Building 2 New Systems. Please help.

First I wish to thank ever one in advance. I have been
reading the forums for a few weeks now and have
gathered a lot of good info.

This will be my first new system build, actually my first and second.
I am planning on building two pretty much identical systems.
I would like the two systems to be well rounded. I wish to be able
to multitask, play games, watch TV, spreadsheets, word processing,
programming, etc, etc....

I myself love to tinker with things and plan on learning to over clock.

Below is what I have come up with over the last few weeks.
I am looking for any and all suggestions or alternatives.

With a monitor and a few other accessories what is listed below prices
out really close to what my budget will be. I am shooting for about $3000 plus
or minus for both systems.

If I can trim a little here and there without
sacrificing performance or potential I can get a nicer monitor or some other accessories.

Heres is what I have so far.

Antec P182 Gun Metal Black 0.8mm cold rolled steel ATX Mid Tower Computer Case

I would very much appreciate some other suggestions, possibly something without
a front door and more front USB connections.

Antec True Power Trio TP3-650 ATX12V 650W Power Supply with Three 12V Rails 100 - 240

Is this PSU overkill? Is it modular or again do I care?

GIGABYTE GA-P35-DS3L LGA 775 Intel P35 ATX Intel Motherboard

Intel Core 2 Quad Q6600 Kentsfield 2.4GHz
2 x 4MB L2 Cache LGA 775 Quad-Core Processor

Will I automatically receive a processor with g0 stepping or do I really care? Do
I need to purchase a better CPU cooler?

G.SKILL 4GB(2 x 2GB) 240-Pin DDR2 SDRAM
DDR2 800 (PC2 6400) Dual Channel

EVGA 512-P3-N802-AR GeForce 8800GT Super clocked 512MB
256-bit GDDR3 PCI Express 2.0 HDCP Ready SLI Supported Video Card

I know that there are several flavors of the GeForce 8800GT some harder to
find then others. Which one do I want?

Western Digital Caviar SE16 WD5000AAKS 500GB 7200 RPM
16MB Cache SATA 3.0Gb/s Hard Drive

SAMSUNG Black 20X DVD+R 8X DVD+RW 12X DVD+R DL
20X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM
48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA 20X DVD±R DVD Burner

Microsoft Windows Vista Home Premium 64-bit

Thanks again.

The psu is semi-overkill if you don't upgrade the cpu/gpu at all in the future. I'm sure you will.

No, you don't get G0 unless you look/ask for it. Neweggs don't. G0 can take more heat so it can overclock higher than non-G0.

Get the 8800GT for around $250. The rest are overpriced. For $300, you can get a GTS512 after rebate.

24" Is very big the 22" i find is perfect size but it depends on your preference. Go for Samsung or for BENQ both provide in my opinion good proformance and value samsung esp. if you are gaming get a 2ms response one its worth the extra.

Stick with Nvida hey they are way more powerful then later on you can Sli them. But all you need is that GTS512 or GT512 for now. As much as i wanna support ATi they aren't as powerful. So stick with nvidia the resolutions are very good and the quality of graphics top notch!