Here's a link to the UK support site, I think you can get live help from here - but according to the HP website, the printer you just bought is an old model that has been discontinued, and I can't see any Mac drivers for it either..... 😟
But it's puzzling that your computer won't read the CD....a quick browse through other HP Laserjet discussions in these forums gives me the impression that HP gives no support to Mac users and that other people have been having trouble with other HP models. 😟
Maybe you've been swindled. Maybe you should demand a refund.
http://h20000.www2.hp.com/bizsupport/TechSupport/SupportTaskIndex.jsp?lang=en&cc =uk&prodTypeId=18972&prodSeriesId=1140734&taskId=110
By the way, other people have just started having HP printer problems a few topics further down the list. Maybe you should discuss with them here:
http://discussions.apple.com/thread.jspa?threadID=1835949&tstart=15