Re: Making a Clickable Link to Another Site?
Best suggestion, forget about dreamweaver. (that would explain the upload directory in the path when viewing extern.php) *Actually I'm not familiar with dreamweaver and I'm sure there is an option to turn off where it updates paths or whatever they call it but really, you don't need dreamweaver for this.
Anyway, it's likely dreamweaver has modified some of your files. Since you haven't installed any mods the best thing would be to download a fresh copy of PunBB from here and upload to your server using an ftp program like filezilla or smartftp.
As for the php files in the cache directory they are safe to delete though it shouldn't matter though you definately don't want dreamweaver synchronizing them.