Skuzzy forgot to mention that is he still using some of the code from either overgrown's or fastforward's hack, which is why it's producing the .html extensions, and which is why search engines are picking up on it better. The visual appearance and layout of his Archiv Hack is much different than original, not to mention the original purpose of the first archiv hack wasn't to allow easier spidering for search engines..but reduced file size in database.
Anyway, Skuzzy please if you could share the method for doing this as Logician mentioned. It would be of great help