Sigh... yet another completely useless toy for non-Windoze users. I suppose the author has never considered releasing the tool as open source (yes, I know Windoze users don't understand the concept of "open")? Or better yet, writing a platform-independent tool (perhaps using Java or Webservices)? Or perhaps trying to enlist some Linux/Unix/Mac OS X Flyertalkers to help port the app? If the app REALLY works, why not just GPL it and set up a project on SourceForge? I'm sure there are lots of people who would be willing to contribute time to help.
In the meantime, is there any we can see those inventories over the web, without the nice front-end of the tool? I'd be willing to use cryptic interfaces, if I could just find a way to check "I" availability on DL!