Hello, i recenlty installed a new wireless router to my prents computer and my own laptop, i also set up a wpa2 security to stop other people accessing it. i had a it of trouble doing this, but managed to get it working. yesterday my laptop automatically started downling a new piece of software and now it seems i have someone else on the network !!! how do i get rid of them !!!
If you have WPA2 wireless security it is unlikely that anyone is borrowing your bandwidth.
You can check by going into the router's user setup screens and clicking on Attached Devices (or similar) this should list all attached computers by MAC ID (the unique number usually printed on a label on all wifi devices)