Here is a link to Xerox's PDF help document on how to use the PPD for the Document Centre for OS X: Xerox DC Tips.
I don't know if it works for others too but it worked for me. I can now access a Xerox Document Centre 265ST over a Windows network! ;-)
[Editor's note: Although this has been referenced in a couple of previous hints regarding printing, it's probably worthy of a mention on its own merits. I used this method to get my Brother printer working. I also used the same method at work to create a completely functional QMS Color Laser Printer in OS X, even though our I/S group told me that QMS had told them the printer was not supported in OS X!]

