Is there a way to get AppleTV to see my computer if it's on a different router than the AppleTV? I have the ATV connected to my DSL router, but I have a wireless router connected to the DSL router for wireless N capabilities. The iMac, of course, is connected to the wireless. But I assume that is preventing my computer and AppleTV from seeing each other. Is there anything I can do to fix that? (Other than make them share the same router)