Open the "Control Panels" folder from the "Settings" slot on the Start Menu.
Double-click on the "Add/Remove Programs" icon.
Scroll down the list until you find the "Adobe Acrobat Reader 3.01" entry, then click on the "Add/Remove..." button and click yes to confirm. The program will now be uninstalled.

OR,

From the Start menu open the \Programs\Adobe Acrobat path and select the "Uninstall Adobe Acrobat Reader 3.01" entry.
Click the "Yes" button to confirm and the program will be removed.