Sounds like you need to have another coat of Polyurethane applied to your floor, Neal. Do not try floor wax, as it is intended to be used on previously waxed floors only, and any new finish will not adhere well. First, your entire floor needs to be lightly sanded to remove any dirt and accumlated residues. The idea here is not to remove all the old finish, just to blend the scratches and provide a uniform finish for the new poly. Next, you need to get up all the dust left by sanding, preferably with a vaccuum followed by a rag dampened with thinner. Applying polyurethane is a fairly simple process, utilizing a short-nap paint roller, an extension pole, and a paint pan to apply a thin coat of polyurethane. If a second coat is required, (I'd recommend it) wait until dry and lightly sand first coat, remove dust, and apply another light coat. Use 220 grit sandpaper between coats, and you'll have a really great finish, as long as initial prep was done properly and no dust contaminates the surface during curing. Good Luck.