I checked the HP website and found that the Z3100PS GP is on their list for upgrades for Windows 7, supposedly in June, 2010. I searched the software downloads and found only 3: HP Instant Printing Utility (June 10, 2010), HP Printer Utility (May ?, 2010) and presets for banner paper. I also found a statement to the effect that HP and Microsoft have collaborated on new drivers for the DesignJet printers, and that these are included in the Windows Update feature.
1) What the heck is HP Instant Printing Utility? Does it supplant the Printer Utility?
2) Is there supposed to be a firmware upgrade, or specific driver upgrade?
3) If it is included in the Windows Update feature, I was unable to find a reference to the DesignJet Z3100 by searching the Microsoft website, other than an article referring to a photographer who uses the Z3100. Are the new drivers embedded in the MS Windows Upgrades, without being referenced in the name of the upgrades?
What do we do? I've been using the Vista driver and there are some problems, although I am able to print from Qimage.