With the Winpopup plugin it is possible to send and receive windows "net send" messages with Kopete.
It should work with Windows 2000, XP and every OS where  is running on (BSDs, Linux, OSX...). For Windows 98 and ME you need an additional Winpopup program.
It is re-enabled since Kopete 0.12-alpha1.
The current version has been tested only with Samba 3.0.x. It may or may not work with Samba 2.2.x or Samba 4.
Prerequisites and configuration
You must have installed the samba server and smbclient program. The samba server needs to be configured and running.
It needs a directory where messages are temporarily stored.
mkdir -p -m 0777 /var/lib/winpopup
Add "message command = _PATH_TO_/winpopup-send.sh %s %m %t &" to your smb.conf [global] section.
So it may look like this:
[global] workgroup = TUX-NET server string = my linux server interfaces = localhost eth0 bind interfaces only = yes name resolve order = host wins bcast dead time = 5 message command = /opt/kde3/bin/winpopup-send.sh %s %m %t &; local master = yes preferred master = yes # share definitions [homes] ...
For further information take a look at the smb.conf manpage.