using perl to "press enter"

[Anonymous Monk]

I am not sure this is possible, but I want to somehow write to stdio or some such and make a perl script that will press enter on a timer. This is for a windows application that I have to mindlessly babysit. (and that I can't launch as a child process) This is what I am using currently to tell me when to hit enter....

while (true) {
   print"\n$t"
   $t=$t-1
   sleep(1);
   if($t<0) {
      print "press enter NOW";
      #TODo - hit enter automagically
      $t = $timerlength; #reset
   }
}