Hi Cheryl, I have a friend who ran dosemu back in 1994 (but I don''t recall what distro). If you don't have any luck, I'll be glad to contact him since presumably he knows what he is doing. He's sighted though and might not be as concerned with serial port output as we are. Interesting with /var/lock. On Redhat my permissions look like this: drwxr-xr-x 2 root root 4096 Feb 11 12:50 subsys [I'm not running dosemu though. Jim Wantz