i've been struggling with this problem for months and am about ready to give up. is there something i just don't understand? i have the standard comcast modem with one ethernet port. i want to be able to run my airport express and also wire in my xbox 360. i have an ethernet cable going from my comcast modem to my d-link 5 port desktop switch. there are two cables coming from the switch, one going to my ariport express and another going to my 360. my airport works but the 360 doesn't. if i restart the modem then i can get the xbox to work but i loose the wifi. what gives? what am i missing? any thoughts?