Flash media server 3.5- help needed

i have installed flash media server 3.5 …windows vista and using FLASH 10
right now in
Flash Media Server page I am only able to play HTTP sample,

RTMP file is not working , i check the sample folder >> and open HelloWorld

>> that shows error :: Error #2044: Unhandled NetStatusEvent:. level=error, code=NetConnection.Connect.Failed
at HelloWorld/connectHandler()

what should i do now

need ur help urgent