Help - I can see MyBook World Edition but can't connect

Hi. I am running a Mac Leopard 10.5 and have WD MyBook WE running over Wireless to back up with Time Machine.  We moved and are now using AT&T and I can’t connect to the MyBook.  I see it on my mac but when I click connect it does nothing.  My backup’s are all failing.  I remember having this problem before but don’t remember how to resolve it.  Please please please help. :smiley:

take a look at this link and explain which one applies to yourself