Serial port access under dosemu

I'm using SuSE 8.2. I installed dosemu 1.0.2 and everything seems OK, except I can access serial ports only as root. There is no access to serial ports as a normal user. How can I enable serial port access to normal users? Details: Control a device connected to the pc serial port com1(ttyS0). The pc software is DOS based. The user is in uucp group, so /dev/ttyS0 permissions is not an issue. Previously this box was running Debian with a plain dosemu install and there was no problem to access the serial ports as a normal user. cee