Tip - I need to reconfigure my WRT54G2 to work with Comcast Cable Modem - Please help!

She said this is the only place I can look for help unless I pay them $39.99 for help. My router worked fine. Comcast did updates and now it wont work. If I connect the cable modem to the laptop the internet works fine.   It's the router. She said I need to reconfigure it. I tried looking on the sit...
Tags: E1200 , E2500, E3000, E4200, EA2700, ea4500, EA6500 , EA6900, WRT1900AC, WRT54G