If you're trying to use one wireless router to split it up, unless the thing can do multiple SSIDs, then no, you can't. You'd need two wireless routers. Once that's done, you wouldn't really need the FW anymore unless you want that extra security there.
In that scenario it would be:
Otherwise, just hang two wireless routers off the uverse router if it has the ports to do so.
I can't see how else you'd do that simply.