I've installed windows 7 ultimate (32), everything works fine except audio. Will provide all necessary info below.
Downloaded Realtek driver latest version but still no luck.
CPU - Core 2 Duo E8400
Motherboard - Abit IP35-E
RAM - Transcend 2GB
HDD - Seagate 500GB
GPU - GeCube HD4850 512MB
Monitor - Dell 19'' SE198WFP
SMPS - Corsair VX450W