Would it be possible to create a form that submits to multiple places, then returns the different submissions in separate iFrames? For instance, one form on a page that would show both Google and yahoo results side-by-side, in iFrames? I have no idea how to go about this. Maybe someone could point me in the direction of a good tutorial if they don't feel like explaining it?
How about calling a JavaScript function on submit and from there you call to Google and Yahoo with search string.