i appreciate you guys replying so fast. i have my imac hooked up by ethernet directly to the router, my ps3 and ipod touch are both wifi. i can turn internet sharing on my imac and connect my ipod and my imac on the internet at the same time, but my ps3 still wont connect. i was thinking maybe it's because the software that came with the belkin router would never install on my imac. but i just dont know why the ps3 wont connect. to get my ps3 on the internet, i have to turn off internet sharing, turn off my mac, turn off my ipod, and reset the motorolla modem comcast brought over, then i can finally get on the internet on my ps3. if i try getting on my ps3 while my ipod and imac are connected, then the internet test on my ps3 fails at "obtaining ip adress".