Files on the Mac are recognised via file types and creator codes. (Well, they were in Mac OS 9 and earlier, I?ve moved away from Mac since then so I am not sure about Mac OS X). As you know, file types in Windows are recognised via a file extension. For your plug-ins, simply amend the appropriate file extension to the filename if it does not contain one. (Check to make sure that you are not hiding file extensions in Explorer first.) If the plug-ins are your own and are not encrypted, you?ll be able to open them via the Plug-In Editor in VW. Scripts on the other hand, since they are not stored in binary format but are plain text, should be editable with your favourite text editor. If you have not done so already, add a file type of .vss through Explorer and assign the files to open with your text editor.
There should not be a reason that plug-ins created on the Mac do not run in Windows provided any scripts that access external files use the Windows style file path delimiters. Even if the delimiters are Mac style the script/plug-in should return an error when accessing an external file when run on Windows.
One thing to note: Plug-ins created on the Mac through the Plug-In editor/Script Editor should in fact still have the file extension as part of the filename.
I personally ?converted? (for lack of a better word) hundreds of plug-ins without an issue.
Good luck.