I have a Trek 7.3fx and recently bought a Kurt Kenetic trainer to keep some of my bike fitness over the winter. My wife would also like to use the trainer and her bike is presenting the problem I'm running into. She has a cheaper Nishiki bike from Dick's that doesn't have a quick release skewer in the rear wheel. I didn't notice this until after I picked up the skewer I needed for her bike to fit into the "cups" (or whatever the specific name is) on the trainer that holds the bike in place. I had assumed I could just take the rear wheel off, remove the bolts and use the QR skewer I had, but that's definitely not the case since the bolt that runs through the middle of the wheel appears to be attached to the hub/ball bearing in the center of the wheel. I can take a picture of what this looks like if it helps, but I'm assuming at this point that it is likely how all wheels with standard nuts work. My question is what do I need to do to get the QR skewer on her bike?
Side note/rant: What kind of bike still comes with non-QR wheels? I have Diamondback that I bought at Dick's almost 15 years ago that has QR wheels on the front and back. And why would they put a QR wheel on the front and a non-QR on the back?