hi again, its easy soldier!
1st. donload the script called ejecting a group from a helicopter. You can find it here:
http://www.ofpec.com/editors/snippet_cat.php?id=42nd. Put the sqs file into your mission folder, ok?
3rd. Put a waypoint (for the chopper)were you want the group to be ejected.
(before continuing i suposse that you have already named your chopper/aircraft and the group you that you want to eject.)
in the "on activation" field of the waypoint, type this:
[groupname,choppername] exec "groupeject.sqs"
And that's all.
I hope this can help you.