John, thanks for the info. If I can get a refund for the Dyna I'll run from Toys R Us to my LBS nonstop and get a new wheel. I believe they are 26". There's only one problem - the bike is a 10 speed, it has two "gears" (sorry for not using the right words) where the pedals attach and on the rear tire it has 5 gears. Do these come with the wheel, or do I need to remove them? I took the wheel off the freespirit and was able to remove the bearings and the nuts and washers that held the wheel in (I took pictures of how they were arranged, so I won't forget) but I don't know how to get the 5 gear "thing" off. I'll post a picture of what I'm talking about once I get some batteries for my camera.