i was close to getting the walmart bike to ride as-is or use it for parts. but i kept thinking back to times when i have tried other bikes from kmart and sears, and the experience was bad. Mine rides well as-is and I can keep up with and sometimes pass other commuters on much more valuable bikes. so i'll just enjoy what I have (for now).

what some of you said here finally sunk in to my thick head as I discussed it with the guy at my LBS. The investment would not be worth it. However, i will be keeping my eyes open for parts at yard sales and craigslist. just for fun.