Simple and yet not so obvious effort with my new Samsung Galaxy Note. Change the apps on the dock.
1. Click on the Applications button (Should be on the doc)
2. Click the Menu button.
3. Select Edit.
4. Drag the app you no longer want off the doc and then drag the one you want onto the dock
5. Click Menu button.
6. Click Save and your done.
You will also note the option to place a folder on the dock in place of a app if that is to your liking.