Perhaps you guys can give me a suggestion. This has nothing to do with VFP, but if I can do it in VFP that would be fine. I don't mind buying this of the shelf if needed.

In a new business I am involved in, I need to be able to send a short text message to a couple hundred computers at once. I need it to get there within a few seconds, but a minute or so would be fine. When the other person get's it, I would like it to be a popup. I will not have the IP address, but just their email address, or the Yahoo IM address.

Yahoo IM actually does this fairly nicely as a blast. But I would like to search out other suggestions first.

I am not interested in using twitter or a phone text message.

Thanks in advance for any help.