Well, I threw some (maybe 50%) of the data I've collected so far into mappoint; take a look:

http://www.seanmcpherson.com/wireless/

Then just browse down to Louisville.

If you have netstumbler files you want mappointed, lemme know. I have stumbverter and mappoint 2002, and can generate the maps. All I ask is permission to stick the same maps on my site *grin*