At my work they already have wireless throughout the building, plus I have an ethernet cable in my office. Setting up my own wireless network is not allowed - it would be easily discovered. Can I plug this in the wall and just use it for wireless printing and wireless itunes? In other words, can it communicate with my Macbook Pro without the ethernet cable? Will my "mini network" be viewable (not necessarily accessible) by those in the hallway searching for available networks? Thanks!