It's an iBook. I'm literally looking at one right now.
The ports visible (from left to right) Ethernet, Firewire, USB, USB, Video, Headphone. There's a modem jack further to the left, covered up by the yellow coloring.
Well most people who even think about buying Vista won't be smart enough to recognize the irony. "uuuuuhh you got one uh dem white laptops for duh micosuft vistuh? im lookin to get me some techmology, mkay?"
You will probably find the store the ad was in, hired and paid for the ad. I doubt very much that this has been approved M$. Also because 'most' design agencies use Macs and dont like PCs some sneaky designer has pulled this off quite well. Given the chance I would do it too.