Does your "Ultimate Dealer Website" incorporate an unnecessary amount of Flash? I hope not
There are several companies out there that specialize in DMS data polling. Check out Authenticom, SelectQu, DMI, and HomeNet. All of them can gather data from pretty much any dealer DMS or third party, clean it, vin decode it, append photos, etc. and send it to just about anywhere. Some of them, like HomeNet also offer an online interface to the inventory.
Dealer Specialties is one of the leaders in taking photos of cars on the lot and sending out to services. Not all dealers use them, however. VIN solutions, Auction123, and AutoUplink are some others.
Hope this helps.