Question: How to disable popup window on system calls in OS X?

I'm a new Maple user with an installation of Maple 10 on mac OS X. I'm trying to make system command calls so that I can convert eps files to to pdf using system("epstopdf foo.eps") This works, but Maple insists on putting the result in a popup window which I then have to manually click to close. Does anybody know how to disable this? Also, how could I get the resulting text output from a system call so that I can manipulate it in Maple. Thanks! - Mark
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