IFRAME Scroller content update form?

[steamngn]

Hi all,
I have installed on my website an IFRAME News scroller script (sweet!:D ), and the content being in one html page makes life easier when it comes to editing. Now I have been asked if there is a way to create and html pag with a password form where authorized users can add/delete/edit the scroller content. I have no idea even where to begin on this. Can anyone give me some guidance, even whether or not this is even possible?:confused: Any help would be greatly appeciated!
Code looks like this:

<!-- ADD YOUR SCROLLER CONTENT INSIDE HERE -->

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<!-- END SCROLLER CONTENT -->

Andy