I know this topic has been discussed on here, but I'm looking for an answer in layman's terms. I currently have an Actiontec router from Verizon Fios. I run my wireless internet, as well as my cable tv, through this router. I purchased an Airport Extreme with the hopes of connecting my external hard drive, allowing access to it wirelessly for my Macbook Air, iPad2, etc. When I set it up last night, my Macbook Air recognized both networks (the Actiontec router and the Airport Extreme basestation), but it did not allow me to access the external hard drive and use the internet at the same time. In essence, I could use one or the other. Obviously, this is not what I had in mind. My setup: coax cable into Actiontec Verizon router. Ethernet cable from Actiontec Verizon router to Airport Extreme. External hard drive connected via USB to Airport Extreme. Any help would be appreciated.