Hi,
Your printer is NOT on the following list:
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c03168175#N53578
The following link shows no more support after Vista ages. Probably it's time to buy a new printer.
http://h20566.www2.hp.com/portal/site/hpsc/public/psi/swdHome/?lang=en&cc=us&sp4ts.oid=306510
Regards.