>I no longer get a display with I run ?sys(6). Everything seems to give me a display except for sys(6). Can anyone tell me why?
>
The Sys(6) function is the same as Set("printer",1). It returns empty string because SET PRINTER TO doesn't set to anything. Try

SET PRINTER TO myfile.txt
? Set("printer",1)

Set("printer",3) will return current VFP printer and it can be changed with SET PRINTER TO NAME command.