IF IT works do not repair !
Please could somebody help me configuring my Router and discourage others from using my internet without my permission
No idea whether your WIFI network is protected.
In your computer check this.
NETWORK show all connections.
See your wifi connection .
Does it show secured or unsecured ?
Switch off wifi router when not in use.
If your tariff plan is unlimited usage , no worry!!!!
Did you try to access the wifi router menu pages by typing absolutely no idea how to go to the Linksys login page.
192.168.0.1 ( YES /NO result )
or 192.168.2.1 (Yes /No result )
or the address given in label of Linksys' router ( YES NO. not seen)