Thanks, I actually made two mistakes:
1) I have 2 Beo4 remotes, and one has the Go button, the other has a tiny joystick thing. I was using the wrong remote for that TV, so I could navigate but not click anything
2) I assumed that because the US bought unit had scart connections on the back, it would be able to deal with a european composite video feed. A few newer TVs are smart enough to figure out what the signal is. I’m going to have to get a PAL/NTSC converter with minimum frame lag.