I think what is being said above is that you don't need to buy any new wheels, just rework the hubs to have solid axles instead of QRs. If (as is almost certain) you have loose ball bearing hubs, the process is very easy providing you can find the right diameter and thread axle in the solid design. Also providing you know how to rebuild hubs and adjust the bearings. Not difficult, but it helps to have some experience with it.