If they're HP, unless they're plotters, they probably can do generic postscript. Just us the generic postscript PPD and you should be fine. I chose the generic PS in the setup and print just fine to an HP2200 and HP8500 with no issue (in color and b&w, with duplexer). You only need Foomatic if you're converting to something off, like PCL for a plotter, or printing to an Epson or such that doesn't know generic postscript.