installed but a problem and questions

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ok i finally got my osx leo installed. i have questions about updating, like how and should i use the auto updater. i also noticed i dont have any audio. my audio is onboard, HD audio.

 

hardware is

Abit IL9 PRO-

LGA 775 Intel® 945P FSB1066

Dual DDR2 667

PCI-E X16

SATA 3G

GbE LAN

7.1 CH HD Audio

 

Crucial 2gb DDR2 667

Pentium D 3.00 800

LiteOn dvd rw

 

 

i had installed flat-x86 and i had audio, but with the ToH i dont...

 

PLEASE HELP ASAP