Try to simplify they situation by plugging the Printer into the Win 7 machine through the USB option it most likely has. If it prints then that will at least eliminate the Drivers as a potential problem. Then if that works try networking the printer with a static IP address through a Switch if you can lay your hands on one. If the printer prints then the bone can be pointed at the Router as a likely candidate. Try a Static IP and Network it through the Router. If it works then the Router may acting up on the DHCP side of things.