Yep this works in Linux - Ubuntu 11.04 is my main development platform and sometimes I even remember to test in Windows
Have you restarted Calibre?
Don't extract the zip file!
Try following the steps in the first post under the Install section, and then let us know what isn't working - with details to help pinpoint your issue.
Oh - and I recommend the latest calibre as well for the great built-in plugin management facilities. I'll have to update the first post to mention that.
Oh, and I only see 27 pages of posts, but they're really long pages
