Simple messaging program: NT to Win9x

Hi

I would like to know if anyone has discovered an easy to use replacement for WinPopup. I have Win2k and Win9x machines on my company network, and would like to enable communication between them. I am looking for a program that is simple and intuitive – no bells and whistles.

Other programs I have looked at have been capable of sending attachments, spanning the internet etc – I do not need this functionality. I want a simple text messengerwith a simple GUI. I do not wish to use NET SENDas Win98 machines using WinPopup do not recieve the messages.

Many thanks