Thanks Sergey. I have tried to add a SYS(3050,1,1800000) command to config.fpw but it doesn't seem to be setting anything (i've added a menu option to the running exe to test this). I have the .fpw file in the startup directory of the exe. Maybe it's "=SYS(3050,1,1800000)". Is it better to have a COMMAND = DO MYSTARTUP.PRG ?