Is there some way I can populate a frame page dynamically? Specifically, what I want to do is allow a user to input a stock ticker, submit that to Yahoo finance, and show the results in a frame.
You can't show the yahoo page inside your frame without their permission but if you are getting a value back from the web service that you are quering you can use that value to determine which of your pages you want to display. Is that what you are trying to do? EE