I will show you SS, to prove that i already install it on CM 7.2
My System Memo Application
Memo Shortcut on Drawer
How to :
1. Your HH must be on root and have root explorer installed.
2. Download memo.apk and place it to you sdcard, in fact i have task manager.apk but i don't install it cause i don't need it thought CM 7.2 don't have task manager.
3. Open root explorer, move / copy memo.apk to /system/app
4. set permission like picture below
5. Done, back to drawer, if memo shortcut not show you must be restart your HH
This tutorial already tested and verified by me on my Galaxy Gio (S5660) so if your galaxy Ace, Mini, etc not work then this tutorial not suitable for your HH, Thank hope this tutorial can help you
*BEWARE USING ROOT EXPLORER YOU CAN ACCIDENTALLY DELETE YOUR SYSTEM FILE AND MAKE YOUR HH BROKE, SO BE CAREFUL