prevent windows error popups / autoclick on it?

Hi

i'm writing a script, that executes some w32-console apps and then
analyzes their logfiles.
in the case, that the app produces a window error message (popups like
"unhandled exception..") the script stops (clearly).
i start the apps via system().

how can i prevent these window popups?
or is there a way to identify that windows and "autoclick" on "ok" ?

any help would be very appreciated

hannes