Emily...associate the extension, then Winzip will know what to do. When I double-click on a .fcz, for example, a window pops up telling me windows doesn't know what to use to open the file, I select Winzip.exe from the list. If you check the checkbox in this window ('always use...'), Winzip will always be used. Then Winzip opens up a window with the file inside like a regular zip. Now you can deal with it like any other zipped file.