In my day it meant "Synchronous Data Link Control". This protocol was established by IBM (aka "God") to allow the "unwashed" (aka "the rest of us") to communicate with "God". Much like the "Tower of Babel". Only harder to understand.:rolleyes: Seriously, if it is really "Synchronous Data Link Control" it's really no more than ODBC at an AS/400 level. Very simple. Cheers. Don