Also the setup of a second router required me to turn off the DHCP in the non-Uverse router.
And no, I don't own the Express so I can't advise on exactly how to use that model. But it's likely to be just the same as the others.
GOOGLE THIS -> HOW TO USE A ROUTER AS A WAP?
I've connected my uVerse router to an Apple Extreme because I can use WEP2 and also an Apple Express to extend coverage in 2 story house.
My problem is I get duplicate IP's assigned to some of my 3 computers. Two are wireless. I've turned off the wireless portion of the uVerse router with no improvement. I also put the Extreme in Bridge mode. Any idea's?