I need to put dialogue for "latest rumors" specifically in the area of Dagon Fel. How do I do this? Also I hope no scripts are involved...

Under 'latest rumors' scroll down till you get to 'Dagon Fel' under the 'Cell' coloumn. You can easily miss it as there are only two of those. It is just above the Balmora ones. Right-click on one of them and select 'new'. It should create a new blank entry above the selected dialogue. Fill in the dialogue, add appropriate speaker condition including the cell filter for 'Dagon Fel' and you are good to go.

Keep in mind that when you click on a dialogue in-game, the game searches the dialogue from top to bottom, and stops when the conditions are met. So place your dialogue appropriately.

and please pay attention to edit the new, hi-lighted entry, not the original one below. Changing the original line without realizing is one of the most common causes of dialog conflict problems

There are a couple of good tutorial for dialogue by http://www.fliggerty.com/phpBB3/viewtopic.php?f=63&t=4463 and http://mw.modhistory.com/download-90-5552. They should help you enormously.

Thank you all very much