Selling a computer

I have a fairly new computer, I'd like to sell it. How should I do so
locally? I've tried a free-ads paper with no luck. Classifieds seem like they'd
consume more of the meager revenue I can expect on the project

An Athlon 1200, 256Mb memory, 17" monitor, ~5000Mb hard disc, CD reader,
windows 98, in case you're looking. I'm trying for 300 dollars, but lowball away.