MK63 and ATT modem with WPS

> [...] How should it be hooked up to an ATT modem with a separate WPS
> [...]

   What, exactly, is your (unspecified) "an ATT modem"?  Maker?  Model
number?  If it has its own "separate "WPS", then it sounds like a
modem+router.  Cascading multiple (NAT) routers can cause multiple
problems.

   If your (unspecified) "an ATT modem" can be configured as a
modem-only, then you could use the MK63 as your one router.  But then
the only device which you could connect to your (unspecified) "an ATT
modem" would be the MK63; all client devices would be connected to the
MK63.

   Another one-router arrangement would be what you have now, but with
the MK63 configured as a wireless access point, leaving your
(unspecified) "an ATT modem" as your one router.

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual (at least).  Read.  Look for
"Set up the router as a WiFi access point".