if you follow the procedure outlined here:
http://tln.lib.mi.us/~amutch/pro/kmeleon/khistfiles.htm
k-meleon will generate a file named history.dat in your profile directory, which contains the visited URLs, along with a lot of other information that isn't in easily-human-readable form, unfortunately... i'm still hoping someone will write up a plugin to make use of this file... or perhaps the next version will have better built-in history functionality...