HP Laserjet 1160 and Vista

Hello! My mum has an HP Laserjet 1160. She has been using the printer with no problems with her PC that was on Windows XP. Last week she purchased a new PC. The new PC is on Vista. We have hooked up the Laserjet to the new PC. When I look at the Control Panel > Printers, the printer is listed but when I try to print a test page, it does not print. I have watched the print queue as it tries to print the test page and I can see that in the queue, it spools, prints (but doesn't actually print) and then deletes from the queue. I have tried deleting the printer and adding it again. I have tried downloading the drivers from the HP website. I downloaded the 1160 driver and then I downloaded the HP LaserJet 1160 PCL5e Driver - I wasn't exactly sure what that was meant to do but it seemed like a good idea. I am really stuck now. Please help! Any ideas or advice will be VERY much appreciated. Thank you! Susannah