Dual band, multiple network question
I have an airport express as my primary router and an Airport Extreme to extend. I'd like to create a seperate 5Ghz network for my pc for faster speeds but I need to keep a seperate network at 2.4Ghz for my ps3, xbox and other peripherals. I've searched around the web and can't seem to find a clear concise answer about how to do this. Both my routers are less than a year old and I'm reading online that they should be able to do dual-band simultaneous. Does this mean that both of them should be able to offer two networks around the house? If anyone can help or shed light to this, I'd greatly appreciate it.
Thanks!
AES, AEX-OTHER, Windows 7