Signed up for Standford's courses and haven't heard a thing?

I signed up for probabilistic graph networks and haven't heard anything. I thought it was supposed to start at the end of Jan.

You can check the web sites of the respective courses or better check here: http://class-central.com/. 5 or so classes are starting from the 23rd of January, I think one is starting from 30th of Jan. And rest are starting in Feb or March.