I found in torrent . I download Leopard-10.5.2-AMD-EFI-Rev2.iso then I burn dvd at 2x. restart to dvd boot , I press f8 then enter , it pop up , it said please hold the power or restart computer, I press -v , -x, -s, all no go, still lot of panics, dont know why,

my computer is
Gigabyte K8nsnxp-939 bios F6
Althon amd 64 3500 (NewCastle)
4 times 512 mb of kingstons = 2GB ram
BFG Geforce 6800 Ultra
but I tried update to F13 Bios , not good , also set S3 from ACPI , no go