We have quite a few hp printers and I noticed now they all use the HP Universal printer driver which I added to the printer server (2003 serveR) but when someone on win7 64 bit tries to install the printer they still get an error that says no driver was found on the server for this printer.
I don't have any problems with our canon's and Dells but they supply a driver for each model unlike hp who is going to this universal driver route which frankly I don't like.
Best Answer
If you go to your Printer Properties and look on the 'Sharing' tab, you will find a button called "Additional Drivers". Click that. In that dialog you can add drivers for x86_64 and Itanium clients. HP publishes a Universal Driver for 64-bit as well.
In my experience, most HP printers do have model-specific drivers if you look for them.