Asus RT-N56U - Cannot Print From Main Computer

i replaced a lightning damaged Linksys router in my home network with the RT-N56U. My main computer is Win7 64, (Phenom II quad, asus M490GTD) , my wife's computer(wired connection, Dell P5Duo) and my work laptop (wireless connection HP core I5) are XP. I have a USB printer attached to the wife's computer and two wireless Squeezebox receivers. This network worked with the old router. With the new router i can access internet from all computers, and connect to the new network with the Squeezeboxes. I cannot print from the main computer, even though the printer shows up in the devices window and the test page spools.