alright.......
i have installed leo 4.1 amd 10.5.4.........brand new.....
no network(wired or wireless)
no graphic card
no sound card

mbr was the format metod.

i have pci atheros 5002 chipset wireless = never work
i have 2 x 8800gt graphic = worked before but only string, no kext
i have 7.1 audio integrated = works stereo

i have not made any change with the new installation, im waithing for advise.