When we were being all pioneering and adding RSS feeds to Cape Clear’s Web site, we needed a means to create and update RSS feeds. We didn’t have any software to do it automagically, so we ultimately just manually created an RSS file and then updated it. This was a pain in the butt.
A while back, Jim over at Blogs Canada pointed to the very tool that could have helped us out:
Broadcast Builder allows you to create RSS (Really Simple Syndication) channels & Weblogs (Blogs) quickly and easily. You can build a channel from scratch or import an existing one from either your own local computer or from a remote resource, and then edit that channel. It will parse, export, and save the channel for you.
DarrenBarefoot.com 
hello friends, l was lokoing for a rss creater for my website : http://www.bigphp.net but l couldnt find any, l have found a rssinsane in http://www.kolayphp.com site but it needs password to unzip, do u know how can l find a rss creator ?
Try RSS Feed Creator http://www.jitbit.com/rss-feed-creator.aspx
The authors can give you a free version if you ask.