Windows 7 can't find driver for hpdeskjet 6112 series

Windows 7 can't find driver for hpdeskjet 6112 series

I have a hp deskjet 6112 connected to a windows xp box in another room. I can see it in the network on my windows 7 box but when I try and add it I get a message says that it can't find a driver and requests I browse for the INF file (the driver). I can't find a download for the actual driver anywhere (for vista 64 bit or windows 7 64 bit). What can I do to get this working?