Why vendor id on mac is different from on vista?

[xamac]

I installed ideneb 10.5.6 on vmware on my 64-bit vista, the hardware is as follows,

 

e6300, gigabyte 965p-ds3 (alc888/1200 and marvel 88e8056 built in on the mother board), asus nvidia 7600 gt, 2 sata harddisks, 1 ide harddisks.

 

The system can run now without audio and lan. I've tried some drivers from web, none of them works. When I go to About this mac-> more info->pci cards, I found the vendor id is different from what i see in everest in vista, I made a screen capture as follows,

 

http://www.flickr.com/photos/45549694@N08/4175629827/ (for built-in audio card)

 

http://www.flickr.com/photos/45549694@N08/4175629825/ (for built-in lan card)

 

Could anyone explain what's these vendor id stand for? (for pci controller) Why they are so different from I can see in vista?