I'm hoping to get that blue Linksys wireless router, that is the most popular and top rated wireless router out there right? I see that on the back of the routers theres ethernet slot which you can plug wired cables in, so that means i have a choice of using wired or wireless? is it possible to shutdown the wireless signal and just use wired? This will be my first time going wireless, how exactly save is wireless? i really dont want my neighbors stealing my signal and share my network, how do you keep intruders out?