Comcast Cable Modem - Motorola SB5120 with Linksys Router issues

Anyone have the comcast typical inet setup with the SB5120, I also use the LinkSys WRT55AG but only hardwired...
I can't get inet access, I've tried numerous suggestions...
When most folks said to clone the MAC addy, when you check the tab in the routers config, does it update itself or do you have to physically enter it.
Message Edited by Tony1969 on 03-05-2010 09:27 AM

On your Router setup page click on the Sub tab "MAC Add Clone" and below check the box "Enable" and below click on "Clone My PC's MAC" and click on Save Settings..... It will automatically update the MAC add of your Computer on the Router.
Once you done with this settings you need to unplug the power from the Router and Modem, wait for 30sec and then first plug the power to the Modem and once all the lights are lid, then you can plug the power to the Linksys Router. 
Now check if you are able to go online. 

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