Hide the Window

[ppp ppp]

HI All ,
   
              I have created a small program which will open notepad and write 
something to it ..................................  infinitely . The program 
will die if somebody closes the  window . To cut jokes with my friends I want 
to write  a prgramm so that  I can hide the Cmd  then it will be very good . 
can any body know how to write such kind of program 
   
  $SIG{INT} = 'IGNORE';
  use Win32::GuiTest qw( :ALL);
    
system "start notepad.exe";
  sleep 1;
 
    my @whnds = FindWindowLike( undef, "^Untitled - Notepad" );
    if( [EMAIL PROTECTED] ){
        die "Cannot find window with title/caption Calculator\n";
    }else{
        printf( " Don't Close Ur computer will be virus affected "  );
    }
  while (1) {
system "start notepad.exe";
  
SetForegroundWindow($whnds[ 0 ]);
SendKeys("WISH U A HAPPY DEEWALI \n");
  
  }
   
   
  any idea will be appreciated ,
   
  Thanks in advance 
   
   

                
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