TCP adapter issue with BizTalk 2009


We are running our BizTalk 2009 on windows 2003 r2 OS. We were using TCP adapter for BT 2006 from codeplex and it is working with no issues.
Recently we migrated to BizTalk 2009 and I tried to migrate the adapter solution to make it work on BT 2009. But, we send the requests to client BizTalk 2009 is throwing the below error:
The adapter failed to transmit message going to send port "TCPPort" with URL "TCP://". It will be retransmitted after the retry interval specified for this Send Port. Details:"1/19/2011 10:38:27 AM.020: 37: The transmission of the data to the remote endpoint failed. The exception that was thrown is 1/19/2011 10:38:27 AM.020: 37: No response received for solicit-response send location TCP:// on thread TcpSendTransmitWorkerThread37 - causing BizTalk to retry.".
I even downloaded TCP adapter for BT 2009 that is available and I am having the same issue with that too, can you please help me to resolve this issue?
Thanks for your help,

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