I'm in the upgrade the frame camp too. I don't mean this ugly, but no matter how much you polish a turd, it's still a turd. I realize you've got to ride what you have and I rode a Huffy too for a couple of years, an Omni 10. It never let me down and always got me home, but was it a slug! I finally tried a GOOD bike and it almost pedaled itself!

Save your upgrade dollars. Go to your local recycling center, see if they have any 'better' frames to use as a launching pad for your project. Check the curb in you neighborhood on trash day... There's a chap here in C&V that nabbed a SWEET PX-10 on trash day. Now, that wont happen every day, but you might find a real gem. Check the yard sales in your area, another great source of worthy candidates.

You could easily resurect a neglected good bike; tires, tubes, cables, chain and perhaps brake pads for less than you have to invest in just a set of wheels for your Huffy. Just something to think about.