Yeah, I noticed that too, so I just used the matching Vista drivers. So far they all work. I even got both my printers to work by using the manufacturers drivers for Vista; sweeet!!. Give them a try.
I have the Drivers I downloaded from 07/13/2009 & 07/28/2009. They are about 450 Meg in total. I can send them to you. VIA whatever means you need. FTP, EMail, Hand delivered ( A small cost would be involved here )