that your printer number is correct?
I suspect you have an HP PSC 2310 series printer.
If this is the case, do NOT install those drivers into your MacMini. Drivers for the PSC 2310 series printers are built into OS X 10.5.x, so adding to the mix is unnecessary.
Just follow the clearly posted article from the HP website.
You will find it Here
BTW, you are getting a MacMini running/with Leopard, not a Leopard MacMini. Once 10.6 is released, and you install it, you would then have a MacMini running/with Snow Leopard.
I am looking for printer drivers to go with the Leopard Macmini that I ordered. I own an hp psc 310 series. I found OSX 10.4 drivers. Will these work?