The BizTalk Server 2004 Rollup Package 1 provides a cumulative rollup of updates that have been offered since the release of BizTalk Server 2004, and is discussed in the BizTalk Server 2004 installation guide as well as Microsoft Knowledge Base Article 837168. Download now to update your BizTalk Server 2004. For more information about this package, read Microsoft Knowledge Base Article 837168.