NeoRemote

NeoRemote is a little tool that allows you to control your NeoOffice presentations using Apple Remote.

It will also work with any other application that happens to use the same keyboard shortcuts. That is because NeoRemote doesn't use any application-specific scripting, instead it just translates the buttons on the remote to keys (previous/next slide, start/exit presentation).
NeoRemote doesn't have any user interface, it just sits quietly in the Dock, doing its job. When you're finished with your presentation, and would like to go back to using your remote with Front Row etc., just right-click on NeoRemote's icon (or control-click, or click and hold, if you only have one mouse button) and choose "Quit".