Just looking into these boxes....

Am I right in thinking you can't have triggers such as GO 1 or GO RIGHT?  This is how the Beo4 is used to control my Sky box, so it would be helpful if I could make it control my media center pc in approximately the same way.  It would seem from what I've read that this can't be done.  How would anyone control a box that had up/down/left/right but also needed FF/RW and Channel UP/DOWN?  Not to mention exteraneous functions like guide, recorded tv, dvd menu etc.

I've seen there are triggers in the software called FUNCTION_1 to 40 ish, and CNTRL_1 to 19.  What are these?