You mean ad in a Block? If so simply paste the code and publish it accordingly on either of the various block positions. There are no predefined blocks. Just use the add new block feature and paste the code there.
Server specs (Server OS / Apache / MySQL / PHP / DragonflyCMS):
Linux/2.0.54 (Unix)/5.0.51/5.2.6/DragonflyCMS 9.2.1
Joined: Nov 02, 2007