go to the hewlett and packard website, you should be able to to get the drivers there if you dont have a cd with drivers on it. or you could try www.afreedll.com/dll/info/hpzr3207_dll.html
hp site here
I one of these psc printers they were tricky without out the original CD to install the software. You could download the web installer but I always have problems after few runs you get an error.