All plans, can 'potentially' come with the techxpert+200g.. either by paying, or by getting it free, due to the other rogers services you have.
Correct, when its bridged.. its POSSIBLE but a real pain, to check the firmware. Easiest way is put it back to un bridged, then back to bridged again when your done.
Varrys from model to model to check your settings.. so couldnt really say for yours in specific.
It will usually be in the area were you set up the SSID name, set the security, etc.
Will usually be listed as something like wireless mode.. then show options b/g/n, g/n, n only, etc
Then usually in the spot where you choose the TYPE of security you want.... WEP, WPA, WPA2, etc.
Make sure to choose WPA2, and IF it gives the option of Tkip, tkip & AES, AES.... choose the AES only option.
Changing channels.. CAN help.. if there is interfearance on the other channels.
You can download a program called inSSIDer here
http://www.techspot.com/downloads/5936-inssider.html
If you can run this on a device with a DUAL BAND card it it.. would be best (otherwise will only show you the 2.4).
But it will graph out, ANY wireless access points it can see in the area.. their signal strengths, etc.
You can use this, to choose a channel, with the LEAST amount of interfearance.