Right click on KDE panel, choose add applets, choosse applications, choose any program.
You will see new shortcut appear on your panel, right click it and choose properties.
In the properties dialog, on the first tag, you will see a big button contains the app 's icon, click this button will give you a dialog to change icon.
On the applications tag, you can change the name and the command to run this app, type /usr/bin/pine in the command line text box.
Icon in linux can be any pictures format (but png is recommend), not only .ico, so if you can manage to display this image you can take a screenshot, cut the icon and save it in another file.