RSS is a subset of XML
AFAIK they are intended to contain content of things that change. So when you say your site is static, I wonder what you have in mind. You want others to subscribe to it so they can keep up with things.
Anyway, you could write the RSS yourself I suppose. But that would be a pain so hopefully you have some server side scripting language available. You could write a script that gathers info from a CSV file, a database, or scrapes pages etc. then writes the RSS file.
Make sure you run your RSS file through the validator http://validator.w3.org/feed/