I don't know if it is working for you yet.
My ISp uses Zen, I presume it does because when i do speed tests they seem to think I am with Zen and default DNS servers are zen.
Been no problem here and have had net on all morning for music and other stuff.
Desktop machine now powered by windows 8 pro 64bit, no dreaded metro and Linux , laptop by Linux
ALLPAY Wireless broadband