There are some shortcuts that don’t work in the same way in 2007 Office system Ribbon programs as they did before in the earlier versions of Office. But I see that most of the shortcuts that I use regularly are still working fine.
In Office 2003 and earlier when you press CTRL+SHIFT+F in Word, it moves the focus to the Font drop-down list. But in Office 2007 it opens the Font dialog box.
when you press CTRL+SHIFT+S in Word, the earlier version moves the focus to the Styles drop-down list. But in 2007 Office system it would move the focus to the Apply Styles task pane.