I presume you mean you want to use Win32::Process to start a FF session in order to browse the URL.

As far as your 2nd question is concerned, could you not use Win32::OLE to force a refresh of the browsed page in the browser (assuming FF supports OLE)...or, if not, I've seen recommendations regarding the use of elements of Win32::GuiTest to acheive similar goal(s) ?

Update:

Added Win32::GuiTest