Hmmm, I recent bought an OJ 6500 Wireless AIO and Win7 has no problem printing to it - BUT, I don't use the wireless, and instead use the more secure Ethernet. I recommend you uninstall all the drivers and start over, this time connecting the printer to your router via an Ethernet cable and give that a try. If that works, then you know the problem is on the wireless access side, and not strictly a printing issue.