On Sun, 3 Mar 2013, Data Analytics Corp. wrote:
 Thank you very much for this quick response.  I'm running Gretl
on Windows 7. 
 By "gretl-executable", do you literally mean gretl-executable or gretl.exe 
 (I assume the latter)? 
On Windows, that would be gretlw32.exe. And if you're working 
in C you'll probably want to look into the CreateProcess() 
function in the Windows API. system() is pretty dumb.
Allin