Wireless Connection

[Mitch_tAi]

Hey, For the past couple of weeks i have been trying to fix my Linksys Router.
It worked Fine when my Internet Provider was SBC Yahoo DSL, but i have switched to Comcast Cable Internet, thats when everything failed, i hooked up my router exactly how it was last time, but still no internet in the main computer and the secound computer! :(

im new to this thing, idk if i have to change IP's or anything,

can someone help me

thanks i appretiate it <3