I've never built a computer before. Are these parts compatible?

This is my first time building a computer. I'm on a budget of $600. Is this a reasonable build for the price?

ARK A502-2 Beige Steel ATX Mid Tower Computer Case 420W Power Supply

Foxconn M7PMX-S LGA 775 NVIDIA GeForce 7100 / nForce 630i HDMI Micro ATX Intel Motherboard

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

2 X Kingston 2GB 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Desktop Memory

EVGA 01G-P2-N793-LR GeForce 8500 GT 1GB 128-bit GDDR2 PCI Express x16 HDCP Ready SLI Supported Video Card

LG Black 22X DVD+R 8X DVD+RW 16X DVD+R DL 22X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache IDE 22X DVD±R DVD Burner with LightScribe

Cavalry CAUM CAUM37320-B 320GB USB 2.0 Black External Hard Drive with OTB

I already have a 180 GB internal SATA hard drive.

The total price is around $540. Is this worth it?

 

It looks good, though I'd worry about the power supply as it only has a 20 pin connector + a 4 pin and the motherboard needs a 12V CPU 4 pin connector. The manual recommends that you need a 24 pin because you have a PCIx16 video card which leaves you missing one 4 pin. Perhaps you can get away with it, I'm not sure. At any rate, that is one darn cheap case so expect the power supply to be cheap also. Maybe invest the $60 you have left in a decent name brand PSU.

 

I have to reflect Augiedoggie's statement concerning the PSU. I, personally, would follow the advice given and invest in a brand name PSU, Antec, OCZ, Rosewill, and others. That piece of advice is likely to save you some headaches down the line. Is it possible to just buy a case without the PSU and that may leave you more money for a better PSU? Just a suggestion. Trust me, without going into details, I am a FIRM believer in a quality PSU!! I'd just hate to see you invest your money in quality parts and then have those parts connected to a PSU with questionable quality and reliability.

 

Here's a PSU similar to what I have, except mine is 500W, for my recent Q6600 build. Has connectors galore.

Antec earthwatts EA430 430W ATX12V v2.0 80 PLUS Certified Active PFC Power Supply - Retail