|Wha do you mean by IP messages/telegrams. |
There are plenty of applications the will send messages of the internet, Skype, MSN, Yahho. all have applications for this. Whitchever application you use, you will also need a corresponding application on the recieving computer to recve the message.
Then there is Windowes Messanger which allow message to be sent between any two computers with an IP address. But most people have this turned off as it is used by spammers to send messages to all and sundry.