This is actually 2 questions...
1. Do you actually plug this into your TV, or is it wireless? Just a little confused.
2. Can I put regular DVD's in the Blu-Ray player?
You do plug it into your tv. The wireless portion is for the connection to the Internet. It will connect to your home WiFi (assuming you have one) wirelessly or if you don't have a wireless router then you can connect to your router directly, if they are in the same room, And yes, you can play a DVD in a blu-ray player.