Maybe there is, maybe there is... I've just tried a different trick, and that worked for me. I just made a batch file that's got that command in it and then ran the batch file from inside maya. Try this: 1) Create a new text document 2) Enter the following line F:\Programfiler\Windows NT\Pinball\PINBALL 3) Save As "C:\RunPinball.bat" 4) try to execute this in maya system("C:\\RunPinball.bat") __OR___ system("C:/RunPinball") That fixed the prob I had with the text file not opening. Yes, I do realise there's a difference between the direction and number of slashes. This is correct. EDIT: as is the lack of a file extension in the second instance. Simon