How to make an automaticly updating rss feed of a page without editing the page??

[s0nicfreak]

I understand how rss works and how to make an rss feed, but can one make an rss feed of a page without editing that page, like myrss.com can do it; but they only update it once a day, and have ads that cause the links not to work, unless you pay them... I can't link to the site I want to do this of, but if you happen to go to myrss.com and completly on your own search for my name (I do not encourage you to do so) you will see what I mean. Is there a way I could do that myself??