Hi all :

is it a plug-in or other way to make additional extra field for Drop-Down link selection ?
by the way : where can i find another extra field type?

regards

If you are talking about a drop down list of http links, then no. Although it would be pretty easy to modify the drop-down selection field via the template to do this if you can do some basic coding. In regards to plugins, go to extensions.joomla.org/ and search for k2.