I'm currently running iDeneb v1.2 10.5.6 on my desktop. I got no sound and low resolution video. For video I have onboard ATI Radeon HD 3200, and sound I have onboard Realtek ALC889A. From what I have read I'm screwed for graphics, so i'm looking for a low end graphics card that will work flawlessly with OSX. Also suggestions on audio would help as well.

Here's my specs:

LG 22X DVD±R DVD Burner Black SATA

G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500)

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

XCLIO STABLEPOWER 460W ATX V2.2 Active PFC Power Supply

AMD Phenom II X4 920 2.8GHz Socket AM2+

GIGABYTE GA-MA78GM-US2H AM2+/AM2 AMD 780G HDMI Micro ATX AMD Motherboard

Acer 22" Monitor Connected Through DVI

Antec Nine Hundred Black Steel ATX Mid Tower Computer Case

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AMD Phenom II x4 920
Gygabyte GA-MA78GM-US2H
G.Skill 4gb DDR2 1066
Western Digital Caviar 500 gb 7200rpm SATA
LG 22x SATA DVD Drive
XCLIO StablePower 460W
Antec Nine Hundred