I'm pretty sure the "Sparky" icon looks like this (I don't vouch for the site though; found it through a Google Image search): http://img.informer.com/icons_mac/png/48/130/130220.png I think I saw on my collaborator's Mac OSX version. I'm not working on a Mac but if someone downloads the .dmg from the *official* Sparky website, the icon's probably associated with it. Ryan