AZRAEL  It is sad that such a great product has a lack of proper development. This product hasn't seen a good version since the original developer ceased on it. Maybe it would be wise for the current maintainer to pass on the project. To a group that would actively develop for it.  
(Version 5.9.8)

AZRAEL  These filters are not OS specific, rather Photoshop specific. In such they should work in Photoshop up to version 7. CS/CS2 compatability is unknown, as I do not own either to test. Equinox Filters is distributed only in formats both those running Classic, and OS X, can use. DMG archiving is OS X specific, so it is not considered. Zip archiving requires binhexed support, so that the data is readable once decompressed. I have supplied a file in such a manner now for download. However, those of newer systems are most likely using CS/CS2. And as previously stated, I am usure of how and if they will work on them. If you feel unsure to try them on CS/CS2 ... dont. Simple as that.  
(Version 1.0)