Just bought a Linksys WRT54G router to replace the old Linksys BEFW11S4 "b" router (that works). Could not get any internet connection with the new router and the Arris modem that Comcast provides. I spent an hour and one half with the Linksys folks and they/we tried EVERYTHING to get it to work. Turns out that the new router is not "compatible" with the Arris modem... I called Comcast and they said that this modem does not support the new router and said we'd have to get their own modem/router at $7-$8 bucks a month rental.
no, they had me power cycle the router (unplug), the modem (unplug) and power down the PC. Then, power up the Modem, router then PC. Never hit the "reset" which I believe is the standby button on the front?
Other users have been successful setting up a network with the Arris modem and the WRT54G.
Follow these instructions carefully:
Turn everything off – cable modem, router, PC(s) – and let them sit for a few minutes. Since the Arris modem has a battery backup you will need to press and hold its reset button for at least 30 seconds.
The order in which you do the following steps is critical - don't improvise! Turn on the cable modem, and let it come all the way up. Connect the WAN port of the router (the one that’s by itself) to the cable modem, and turn on the router. Wait for the router to come all the way up. Connect your PC to one of the LAN ports on the router (there are usually 4 of them, grouped together), and boot the PC. Repeat for any other hard-wired PCs.
Last, boot up your wireless PC/laptop, and let it find the wireless signal. Once it’s working properly, check the top thread in the Home Networking forum about how to secure the wireless connection and prevent others from stealing your bandwidth.
>>"I called Comcast and they said that this modem does not support the new router and said we'd have to get their own modem/router at $7-$8 bucks a month rental."
I find that to be unconscionable advice, and that the CSR should have said that it is not that that Modem does not support the Router, but that they don't, and won't, support a users personally owned Router, which is the truth.