Hi guys, please don't flame me for my questions but I've been looking here for the answer without any success. Well after 8 yrs I decided upgrading my linksys's router and I was able to setup my new airport extreme wireless and add my ethernet printer without using the USB option. I noticed after using my daughter macbook pro under her log in and I was able to see my airport router and was able to change settings under airport utility. I don't want that to happen as I want to manage everything from my Macpro and I'n afraid that anyone with another pc from outside can have access to it. I don't have any share files except sharing the printer in the network. Also I noticed that I can't have two seperate network name's with individual passwords for 2.4 GHz and 5GHz but I have a separete one for the guest network which I did okay. If I add a hard drive in the airport router via USB can I use that for time machine for my daughter macbook pro? Thanks guys!!!!