yep, please extract in kmeleon's own folder using 7z or any other extractor that supports 7z compression.
the macro has been revised please download again
the files agentswitcher.kmm and badlist.txt should be k-meleon\macros folder, restart kmeleon and select tools>?user agent>auto switcher
unfortunately, there are a quite few websites that still use ancient sniffers and there are always users complaining about that problem
hopefully one day those lousy sniffers will no longer be used.. if you like, you can send a feedback email to the website, explaining their browser sniffer inadequacy and refer them to http://geckoisgecko.info