are you and your wife both wireless? Or is one of the PCs connected with a network cable?
and exactly which lights are on? Number them left to right and describe the symbols or lettering against them.
PS that router appears to have the reputation of being a crock of ****
Motorola's NVG510 DSL modem... not very good
Motorola NVG510 help page for AT&T U-Verse users | Ron Berman @ Haas
Note this comment from the first link:
"Next, the user interface: Quite extraordinarily, much of the NVG510's user interface isn't, and can't be, password protected though other sections of the user interface are protected by what Motorola calls an "access code". The first thing you see when you load the root page in your browser is way more detail than you'd expect, such as the wireless SSID and the network key in plain text! "
That means no security even if you have WPA2 enabled as anyone can read the password.......