Remember to log into steam before you go to bed tonight and make sure everything is up to date. Saves a lot of headaches at the LAN. A client update was released TODAY ([-]January 10, 2008) so make sure you get it
EDIT: ALSO!! Please download the latest version of DC++ (or at least one that supports hashing) Most people tend to use 0.306 which is BAD, you need a hashing supported version. The latest version (0.699) can be DL'd here:
http://dcplusplus.sourceforge.net/download/