How do you delete someone from your im list?

how do you delete a friend from your friends list on Instant Messaging - friend is someone I really don't want to communicate with and I want to delte him.

Hi!
Which chat software are you talking about?

In AIM, there is a small +/- button near the bottom that you can click on to either add or delete buddies.

In MSN messenger, you should go to Tools --> Manage Contacts --> Delete A Contact

In GTalk or Gmail messenger, right-click on the person's name and hit remove.

Those are the only clients I either use or have used. Let me know if I missed the one you're referring to.