About This File
I am uploading again the Snow Leopard Installation package with details how to install the system on PC.
I can not tell you if this method can be useful for other motherboards, but I can tell you that for me works perfect everything.
Probably it's should be ok on Gigabyte Motherboards with chipset P35, EP35
Note... This package is only for retail Snow Leopard DVD, if you have the modified version, then I think that you don't need this package.