hp photosmart p1000

Granted this is an old printer but it still does more than I've ever asked of it. Any ideas on getting this to work properly in Vista? I tried using the Deskjet 930 series drivers (it's the same print engine) and it works... sort of. Word doesn't always print correctly, spacing and margins aren't quite right. I am assuming it is looking at what printer I have installed and some where there is an incompatibility.
Thanks for any insight you might have.
Dave