The New Kids (or maybe just one of them anyway) will be on WNCI (Columbus, OH) tomorrow. I'm not sure what time, but it sounds like it'll be during the morning show. You can listen online http://www.wnci.com/main.html
Also, Donnie is supposed to be calling Montreal's CKOI 96.9 tomorrow morning sometime between 8 and 9 am (eastern time). You can listen online at http://www.ckoi.com/webteles/audio_prestream.php
It looks like they are doing a bunch of unannounced radio interviews, so listen to your local Top 40 station and let me know if you hear they are supposed to be on.