projects cannot report back to ..

none of my projects are able to communicate back to gridrepublic...

message reads  

"unable to do internet communication, no default selected

try Advanced/ options/connections."

And, also recieve message " unable to find path of web browser"

Have tried but no default settings are available..... here is a sample of my messages .

25/01/2009 2:17:02 PM|lhcathome|Sending scheduler request: Requested by user.  Requesting 60480 seconds of work, reporting 0 completed tasks
25/01/2009 2:17:08 PM|lhcathome|Scheduler request failed: Couldn't resolve proxy name
25/01/2009 2:21:08 PM|lhcathome|Sending scheduler request: Requested by user.  Requesting 60480 seconds of work, reporting 0 completed tasks
25/01/2009 2:21:13 PM|lhcathome|Scheduler request failed: Couldn't resolve proxy name
25/01/2009 2:26:48 PM|Einstein@Home|Fetching scheduler list
25/01/2009 2:29:58 PM|lhcathome|Sending scheduler request: Requested by user.  Requesting 60480 seconds of work, reporting 0 completed tasks
25/01/2009 2:30:03 PM|lhcathome|Scheduler request failed: Couldn't connect to server
25/01/2009 2:33:23 PM|Einstein@Home|Fetching scheduler list
25/01/2009 2:34:18 PM|Milkyway@home|Sending scheduler request: Requested by user.  Requesting 60480 seconds of work, reporting 2 completed tasks

can anybody please assist?