media streaming help

i updated to 1.8 firmware saw that i could now stream so i followed the tutorial for wmp11 but my "unknown device" doesnt show up so i went on to try nero 7 and i had the same problem any solution would be great because im stuck ive been working on it for a couple of weeks and still no luck what is blocking my pc and ps3 from communicating all mcafee firewall and windows firewalls are disabled come on networking/computer genius many people need your help