Thanks, the APIs worked great.
[DllImport("user32.dll",EntryPoint="FindWindow")]
private static extern IntPtr FindWindow( string _ClassName, string _WindowName );
[DllImport("user32.dll")]
private static extern uint ShowWindow( IntPtr hWnd, int nCmd );
IntPtr wp = FindWindow( null, "Window Name" );
ShowWindow( wp, 0 );
0 to hide and 1 to show again. For future reference ;D