It's easy to delete a Plug-in.

Here's how:

1. At the bottom of the Yahoo! Messenger window, click Add Plug-ins.
2. Click My Plug-ins at the top of the screen. This shows you your installed Plug-ins.
3. If the Plug-in has a red stop button to the right of it, click this button now. If the button says start don't click it.
4. Once you've stopped the Plug-in, click the garbage can to the right of the Start button.