Cooperate with non-Emacs-users on CVS projects

[Kai Grossjohann]

I'm lucky to be able to use Emacs even though my team-mate is using
NetBeans plus WinCVS.  He has gotten into the habit of invoking
checkin (however that works in WinCVS, I don't have the foggiest)
without typing anything at all, AFAICT.  (There seems to be some
NetBeans facility for using CVS, as well, but I don't know what he
does with that.)

Now, I like to do C-x 4 a to type useful data and then use C from
PCL-CVS.

Do people have suggestions on cooperating with others in this kind of
scenario?  In a carrot-and-stick (but more carrot than stick) kind of
fashion, I'd like to lure him in with some useful gimmick that he
might like so that he produces log entries of some kind or other.

Kai