I am a novice. I bought my first flat screen tv, Vizion 37 inch M series with wireless internet. I plugged my old tv into the cable box and it has 2 prongs, my Vizio has a 3 prong plug. How to I connect to cable if I can't plug my tv into my cable box?
Also during setup for internet, I have to use the on screen keyboard to put in my security code for my network. Where is the onscreen keyboard? Thanks.

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