I am not opposed to buying a used bike or buying a bike from somewhere else... for that same price. Walmart just had the cheapest "decent" (yes VERY relative term!) bike I could find. The problem with a used bike is that I have no idea what to look for. I live in a small enough area that our craigslist is small (only a few expensive mountain bikes and some kids bikes). It seems like it would be hard to try to look at classified ads and figure out which bikes I should try to track down and sit on, etc. If anyone has advice about the best way for someone like me (who doesn't really know anything about bikes) to find a used bike, please advise!!

Also, if assebly is an issue, would it help if I took my Walmart bike to a bike shop, or had my neighbor look at it (he is a hardcore bike rider and has offered to help teach me about bikes when I get one)?

Thanks - I can't believe how fast everyone here responds!!