Does not add Firefox Rated 4 out of 5 stars

I installed this solely to be able to launch links in my TB e-mails in Firefox when I want to do so (my default browser is Chrome). However, Launchy cannot seem to find my Firefox installation on its own, and adding a special launchy.xml file into my TB chrome folder does nothing. If it makes a difference, I am using Windows 7, x64. Any chance this issue can be resolved?