thanks for the info!
we can now sucessfully control students' screens while actually seeing what we are doing.
What we haven't been able to do is find a way to make it work the other way around, that is, broadcast our screen to the students, since that remote control panel is only to be found at the tutor client.
We have found a somewhat convoluted way to fix it.
We control a student's computer, open xsi, then broadcast it's computer.
it seems to work, anyway.
Thanks a lot, the tip was extremely useful.
Luis.