Under Snow Leopard there's no way for HP130nr and HP130 user to access the maintenance utility and therefore perform color calibration, print checks and so on. HP says they have no plan to give people the right utility and suggest us to use the front control panel on the printer.
Luckily there's a workaround to gain access to the maintenance web page: download and install System Maintenance Utility for Designjet 111 H.06.00 Utility for OS X 10.6 from the HP suport site.
After installation, launching System Maintenance Utility and choosing your printer will allow you to access it via the web interface all the good things to maintain your Deskjet printer.
[crarko adds: I haven't tested this one. It may take a bit of hunting to find the above utility on the HP site. I think this link might work. Snow Leopard broke a number of printer utilities; if someone has this printer along with Lion please let us know if the situation has improved (or not).]

