hi to all, and sorry for my bad english first!
i've recently installed snow leopard 10.6.5 retail on my amd system and now i need some help!

this is my system cnfig:

gigabyte GA-MA790GP-UD4H (AM2/ddr2 - AMD 790GX + SB750 Chipset)
amd x3@x4(fourth core unlocked via bios) overclocked at 3.6ghz
4*2gb ddr2 1066mhz
ati hd4850 1gb
hdd and dvdrw sata

this is what i've done for now:
booted pc with OSX86 ModCD 0.3.1, and then swap with SL 10.6.3 dvd and install it.
rebooted again with ModCD,run SL from hdd and then installed combo update 10.6.5 from pkg
again rebooted with ModCD, run SL from hdd and installed Chameleon 2 RC5 from pkg
rebooted from hdd and installed legacy kernel 10.6.5 from pkg found on nawcom's blog


now i have the system working but have a few problem:

when i reboot i have a bios corruption, and i have to restore system default.this happen every time i reboot my system!how i can solve this?

which kext i have to install to have full QE/CI support and native resolution of my monitor (2560*1600 hp 30") with asus ati hd4850 1 gb(2 dvi-and1 s-video)?

i haven't still installed kext on this system

tnx in advice for your help!