01. To expand upon frykes suggestion - create a new user, and allow only 'Simple Finder' access - to limit the 'Dock' options available. How one selects 'Simple Finder' is different in 'Panther' (MacOS X 10.3.x) and 'Tiger' (MacOS X 10.4.x).
02. Regardless of what was already stated, one does not use AppleScript to assign Keyboard equivalents. If a Keyboard equivalent is desired, (one way is to) use the 'System Preferences' 'Keyboard & Mouse' utility's 'Keyboard Shortcuts' tab's panel.