I go to start, all programs, and it shows me all my programs in one columm, and I have to put the mouse over the little scroll down button to see all the other ones, instead of a list that is three columms wide.
Just click the link, then when a box appears, click yes, then hit ok. That's all, then you might need to reboot. The taskbar is the bar on the bottom of your screen when your clock is and the start menu button.