URL Rewriting

I spent a few hours trying to figure out how to get URL rewriting to work. Unsuccessful so far. The main advantages to URL rewriting is that a page that would normally look like myexample.com/test.aspx?product=17 can be made to look my example.com/test/17 which is much cleaner looking and more easily entered by the user. So I am gonna have to delegate this task to someone that has a bit more experience in this area.