Well, well, well. I just installed Flash 6, and believe it or not, it now ASKES you what 'Netscrap compatible browser' you wish to install it for.
Then select the K-Meleon folder, then it askes for the plugins folder... and the rest is working history in 2 minutes flat.
Good stuff
Here is a very fast link to get it (under the STS112 info):
http://spaceflight.nasa.gov/
Nick