exec/system/pasthru I NEED HELP!!!!

Hello, I need to run this program and send commands to it while its running. The program I am running excepts keyboard input commands, but I want my program to give it the commands it needs. Is there anyway of doing this? I want my program to launch a dos prgram (Does this then hangs?) and then send commands to the same program it just launched. Here is my code as is: $result = passthru($command."& 1> output.txt 2>&1; print output.txt; &", $pass); I have tried using exec() system() and passthru() all with the same effect? Does anyone know how to do this? I am running win2000! Thanks again, Josh Seward js389599@ohiou.edu