If you decide to do it take a good look at how the QR works on another bike. If you can get a hold of an old wheel I suggest taking the hub apart so you can familiarize yourself with how it works before you ruin the wheels you plan to use. Make sure you do the work over a towel or something else to catch loose bearings that may try to escape. If you are lucky the bearings will be caged which will make your first hub servicing easier to handle. You will need some grease, I use regular automotive grease and any grease will do. Check out Sheldon Brown's page on servicing hubs here http://sheldonbrown.com/cone-adjustment.html . Its not too hard, but it does take some finesse. I am going to guess the wheels you want to use are the old cup and cone type hubs, before you buy the new axles take the nut from the original axle with you to make sure it threads smoothly on the new axle. Obviously you wont be using this nut on this axle, but it has the same threads as the cones on the original axle and will make it easy to check if the threading is correct. If you still have skewars from the old wheels you wont need to buy new ones, so you may be able to do it for about 10 bucks and an hour or two of work. Good luck