using BTS with Web Services ….

I am stuck with a scenario, need to know how do I start …

I need to have a web service layer to accept messages from a different remote application and send the same to BizTalk where BizTalk would do some processing on it and then send the same message to the Web service layer, which in turn would send it back to the remote Application and this need to happen synchronously ….

I guess I would need to have a Soap adapter on the BTS box to accept the message from the web service and then send the resonse as well, which need to have a timeout set as it happens synchronously … please correct me if I am wrong and also if you could provide me some links to code samples to send and receive messages using soap adapter ….