SAP Plug connectivity b/w ECC 5.0 & CRM 4.0

Hi,

I wanted to connect ECC 5.0 with CRM 4.0.refering a few notes and service market place I came to know this scenario is possible using SAP plug PI 2004.1.But beyond that I was not able to get any information on configuring the same.

Has anybody already done the same scenario?if so can anybody list down step by step procedure for the same.

I will certainly reward helpful answers.

regards,

guru