Wiiping with frustration - wireless woes

I've been struggling for weeks to get my kids Wii to connect to the internet.

I've got Verizon FIOS with the Actiontec MI424WR Fios router. I've got three laptops and an Xbox 360 all connecting merrily using WPA security. I did recently have to upgrade the Actiontec firmware to get make the Xbox 360 happy but I still can't get the Wii to connect consistently.

I've tried channels 1 and 11 on the router which made no difference.

Prior to upgrading the Actiontec firmware I got a successful connection from the Wii maybe once or twice. One time it did download the Wii software update successfully.

Since upgrading the Actiontec, I get a successful connection test every time but still can't get past the Accept User Agreements screen on Wiiconnect24. The Wii just locks up prior to being able to press "Accept" on that screen.

What should I try next?

My WPA pass phrase isn't near 63 characters so I don't think that's the problem.

Since updating my FIOS router's firmware, I get a successful connection test result 100% of the time.

Prior to that I would get Error 52132 about 80% of the time when running the connection test.

The Wii successfully checks for system updates and declares there are none required.

I just can't get past the "Accept User Agreements" screen.

The Hand cursor disappears when this screen comes up. The only button on the Wii remote that will respond at all is the Home button but all that does is get the Home icon with the diagonal red line through it indicating that button is not allowed.

Other symptoms of this lock up: Disk access stops (the disk spins down) and none of the buttons on the Wii console will respond. A hard power cycle is the only option.

Are there specific ports that need to be open for the Wii?

FWIW, Xbox 360 sitting right next to the Wii works fine with the same wireless router.

Thanks all.

FWIW, I don't even ever see the EULA text, just the screen asking if I want to see it.

I'll call Nintendo support.