http://www.playwitharena.com/?&mailform
http://blog.chess.com/NimzoRoy/diagnosing-and-fixing-internet-problems
Had the same problem. Michael Diosi form playwitharena gave me the following link. Good luck.
http://geekswithblogs.net/evjen/archive/2006/06/29/83567.aspx
I can't connect to help files in Arena 3.0. A help window opens, but with the error message "Navigation to the webpage was canceled."
How can I correct this connection problem? ...