Hi 2 All I have a zipped file containing some directories. one directory contain schematic files with the following extensions: DBK,DSN,MNL and OPJ. can someone identify what program use this files? Regards Tal Bejerano AMC - ISRAEL -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics