Originally posted by LanceCoder
2) type in: net send [computer] [message]
where [computer] is the computer you want to send it to (use its netbios name or IP address), and message is .... well... your message
Alas this will not work for computers not on your network.
If you want to send it to an IP of a machine over the internet then you should look at a couple of different software packages.
There is one called IP Messenger - if I remember correctly this came with a trail version. Give it a play and also have a read on it, might give you a better idea how this all works.
PS: This seems to be the new way of spamming windows desktop users (ones running xp, 2000 and nt). Another reason why linux is better