A 2001 bike is just going to be heavier than a 2013 bike in general. Sure you can trim that weight but at what cost? It would be more cost efficient to sell that bike and buy a newer model. The extra weight on your Blue Ridge is everywhere on that bike. It's in the frame, fork, bars, stem, post, components, wheels, yada, yada, yada. Replacing one piece will make a small gain but overall it won't be much. Wheels would be a place to start though.