Hey inqd,
I see you are looking for an alternate driver to use with the Officejet 7110 wide format printer that supports the 11x17 printout size. I would advise looking into the Deskjet 9800 driver which is compatible with this model printer. The DJ9800 driver supports many paper sizes, such as the tabloid 11x17, and establishing custom paper sizes.
Hope this helps,
Jason