Key Sigs for minor Keys?

You know, I'm a drummer, and despite all the snarky jokes about drummers can't read any music that's not on a straight line, I do respect my other musical peers need for reading key sigs, and distinguishing between minor, and Major sigs.  It's kind of like ignoring the time sig 2/4, and just using 4/4, since all you need to do is add 2 of them, and you've got 4/4.  So, why does Sonar ignore minor key sigs.  Or, at the very least, allow a user to add them to an .INI file if, and when they need them?  That's all I got to say 'bout that!
 
KC

What he said^^^^^
 
The key sigs of the relative pairs is exactly the same....
 
C major relative to A minor .... no sharps or flats on the staff.
G major relative to E minor   one sharp F#
 
and so on