Looking for guidelines on building a budget($400-$600) gaming rig

AMD A8-3870K Unlocked Llano 3.0GHz Socket FM1 100W Quad-Core Desktop APU with DirectX 11 Graphic AMD Radeon HD 6550D AD3870WNGXBOX $144.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Crucial Ballistix sport 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model BLS2KIT4G3D1609DS1S00 $44.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

COOLER MASTER HAF 912 RC-912-KKN1 Black SECC/ ABS Plastic ATX Mid Tower Computer Case $59.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CORSAIR Builder Series CX430 V2 (CMPSU-430CXV2) 430W ATX12V v2.3 80 PLUS Certified Active PFC Power Supply $44.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

ASUS F1A75-M LE FM1 AMD A75 (Hudson D3) SATA 6Gb/s USB 3.0 Micro ATX AMD Motherboard with UEFI BIOS $89.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

ASUS 24X DVD Burner - Bulk 24X DVD+R 8X DVD+RW 12X DVD+R DL 24X DVD-R 6X DVD-RW 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM Black SATA Model DRW-24B1ST/BLK/B/AS - OEM $18.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

HITACHI HDS721050CLA362 (0F10381) 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive $79.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Total: $476 before shipping and taxes (if applicable); also need a copy of windows (or you can use Ubuntu), monitor, mouse+keyboard

Edit: Onboard sound from the motherboard should do just fine so you won't need to get a sound card;

http://www.tomshardware.com/forum/274745-31-step-step-g...

This guide is also really helpful.

Wow, kudos to you sir! This will definitely help me decide on some things and see what my standards should be around realistically for the price range and what I want out of it. Also thanks for posting that guide, very helpful. This should definitely get me well on my way, thanks again!

If you have $600 to spend then you should look at the System Builder marathon $600 build from last month .
There are compromises but performance will be better than any other build at that price

Ill definitely give that a look see, thanks for the advice