Welcome to the sevenforums! If you have the original disk seeing Vista drivers
thiose should go on without problem even on the 64bit 7. You can follow the same instructions for Vista on 7 as well since both already include the drivers for that model. Installing the Printer Driver Located in the Windows Vista Operating System*
The 7 RCs have a larger driver
base where you can select that from the list when going into the Control Panel>Devices/Printers section and selecting HP from the list of brands when clicking on the add printer option. Once HP is selected the right column in the screen there will see the list of models to choose from.
Once you that one selected and click next you then turn the printer on and simply press the test page to see if the printer is working. If a usb model like that one is there and nothing happens turn the power off, unplug the usb cord from either end for a few seconds and then replug that back in. You should then hear the sound assigned for device connection.