Here is the nforce 780i LAN driver that I extracted from the chipset package. There are two downloads that I am providing. One is the unedited version, which is how it comes with the chipset package. The other is with the edited version, where the files are renamed and references in the INFs updated to reflect these changes. The second one is for temporary use in BartPE until the BartPE LAN plugin comes out. The only reason why the files are so big is because I didn't delete the NAMSetup.exe files in the NAM folders, which take up almost all of the size.I'm not sure if these were included in the LAN DriverPack yet or in the nightly LAN DriverPack, but here they are.
DriverVer = 10/12/2007, 67.6.7
Unedited:
http://rapidshare.com/files/83016740/nforce780_unedited.7z
Edited:
http://rapidshare.com/files/83018017/nforce780_edited.7z