XP 10.45, real weather after router reset/modem change?

On the weekend I had a Comcast modem changed out- it serves my internet wireless router (an Apple AirPort Extreme), which I also needed to reset due to the different configuration of the replacement modem. I'm finding now that downloading real weather doesn't seem to work. Is there something else that I need to do to XP? (If it's looking for a specific IP address for the router, that may have changed- but I'm unsure as to whether that matters to XP).

Thanks, Bruce.

PS: the answer may be here : http://forums.x-plane.org/index.php?/forums/topic/106871-real-weather-isnt-downloading/

I see that the NOAA server has changed.