[Help] App window disappear when minimized

Hi all,

I'm a newbie Pinguy 12.04/GNOME user.

I've been confused why any application window disappears when it's minimized.
Unlike WinXP and Linux Mint, I cannot see the minimized app on the taskbar.

The app is not closed yet, just minimized.
I can restore the minimized window if Docky is used or by pressing Alt-Tab keys.

Is there a way to make minimized apps appear on the Taskbar?
I read this thread: http://www.linuxforums.org/forum/ubuntu-...eared.html

but cannot find the ' Add Applets to Panel' he mentioned.

Any help is appreciated, thanks in advance!