RSS feed editor

i’ve just created an RSS feed for a website and was wondering what’s the simplest way to give full control to the client as in add/delete/update of news for the feed.

I was thinking of creating for them a simple editor in PHP, having just a title field and description field for each news item, which will then be merged between the opening and closing tags of the XML document… will it work or am i not seeing something? (i’ve only thought about it for like 5 minutes)

or is there any program already available which can do this and spare me the hassle?? (possibly free)

or can you think of any other solution?

thanks