While on your Home screen press menu>preferences>power strip preferences> button preferences and then select screen switcher. It will add a icon to the strip on your home screen.
The other way is to long press on an empty spot of your screen and there is a new option for screens.
I think it appears there's some confusion about the accessing the recent programs switcher. You don't need home++ or 2.1, all you need to do is long press the home button and it'll pop up a box with your last six active applications.