I don't know anything about AppleScript either, I just used the built-in keystroke action. In the editor (after creating the Section, Library, and Group), just click 'Add Action' and select keystroke. Click the 'Edit Action' tab, select the 'Special Key' field and press the 'DOWN' button (for a slide forward command in PowerPoint, the RIGHT or 'N' buttons would work just as well). You don't need to deal with 'Activate Application' if you don't want to or need it. You then add the action to a button by selecting the button on the left side of the window and click the '+' to add the selected action. You can even have multiple actions executed whenever the IR remote control button is placed.
Resno, you probably know most of what I detailed above, but I thought it might be useful to other people viewing the thread. I know it looks complicated from what I wrote, but it really couldn't be arranged more intuitively (it has columns, just like the OS X Finder windows). Many of the built-in scripts for Keynote, iTunes, and the Finder use AppleScripts for functions that could easily be done with a keystroke but have 'if' codes in them so that it only performs the function (like forwarding slides) if there is a slideshow running. The way I have it set up with keystrokes could interfere with other programs if they are the active app. This can be easily fixed with the 'Activate App' field if you find yourself having a problem. Personally, when I am giving a presentation, that is my focus and I don't forsee issues with simulating keystrokes. They are the keystrokes I would be using if I were standing at my computer.
The software is still a beta, so there are some spaces that look like they will be filled in with some interesting features, like copy-pasting actions, application shortcuts, and even the ability to respond to signals from third-party IR remote controls, which would allow the use of a LOT more keys, like numbers, etc. I assume this projected functionality because the developer's iRed (not Lite) works with a commercial IR transceiver that can interpret any remote control signal as well as transmit IR signals to control any IR devices in the room (TV, stereo, etc.).
I'm probably going to become known as the long-winded responder, but I like to be thorough.
