Good points by everyone. I keep going back and forth. I hate to waste things. Just thinking about parting out my old bike gives me shivers. I call it my "scout". In addition to my weekly night rides, I usually take it on new rides and vacations because I know it can cope with the unknown road conditions better than my road bike.
I saw these wheels on bicycle Wheel Warehouse - http://www.bicyclewheelwarehouse.com...s/prod_81.html. They run $199. I think I found a seller on Amazon who has them for $149.
If I go this way I've committed myself to a least another couple of years with this bike. I've got to get my money's worth.

A new bike is so tempting. Arghhhhhh! This is killing me.