Citrix ZenApp 4.5 compatible printer drivers

[Harried]

I need to find some printer drivers that will map to a number of different HP Printer devices and give them basic printing functionality in a Citrix XenApp 4.5 on a W2K3 server environment. I have at least one printer the OfficeJet 6500A Plus, which is theoretically compatible, where the driver that installs is not behaving as compatible. I can't seem to find a printer driver alternative. Any clue as to where I should go to find this and others?