使用BizTalk的必须关注：HWS已经死了，微软已经放弃HWS了，估计替代产品就WWF。（外加其它的宣告死亡的工具和API列表）

下面文字是微软在BizTalk2006的帮助文档里面的介绍：

The following features and API's are deprecated in biztalk Server 2006. Deprecated features should not be used in new applications. For a list of changed features and tools, see Changed Features and Tools.

Features

Feature	Comment
MSMQt	MSMQT Adapter is fully supported in biztalk 2006, but it is unlikely to be the part of the next version of biztalk due to the strategic changes in the technology. MSMQ transport is expected to be fully supported going forward through other venues like MSMQ Adapter available since biztalk Server 2004. Note: MSMQt in biztalk Server 2006 does not support recoverable interchange processing and routing of failed messages.
Human Workflow Services (HWS)	HWS is fully supported with no feature enhancements in biztalk Server 2006 but is planned for removal in future versions.

API's

API	Comment
DelayedSpCall Class	In biztalk Server 2004, Human Workflow Services (HWS), HAT, and the Rules Engine use the DelayedSpCall object.
ReceivePort.SendPipeline Property	In biztalk Server 2004, the SendPipeline property gets or sets the send pipeline used to send a response if this is a two way receive port. In biztalk Server 2006, the SendPipeline property for two-way ports is now configured on each Receive Location allowing the flexibility to have a different pipeline per Receive Location. Note: for backwards compatibility the SendPipeline may still be set on the Receive Port using APIs, however this will overwrite the settings on all Receive Locations belonging to that port.

Tools

Tool	Comment
The biztalk Deployment Wizard	In biztalk Server 2004, the biztalk Deployment Wizard is a graphical user interface that assists you in deploying or removing assemblies to/from a biztalk Management database, installs or uninstall assemblies in the GAC, and imports or exports bindings to/from binding files. In biztalk Server 2006, this tool has been replaced with the Import and Export Wizards. For more information, see Deploying and Managing biztalk Applications. Note: The biztalk Management database is also referred to as the biztalk Configuration database.
How to Use BTSDeploy (Deprecated)	In biztalk Server 2004, the BTSDeploy command line tool was used to deploy and remove biztalk Server assemblies and to import and export bindings. In biztalk Server 2006, this tool has been replaced with the BTSTask command line tool. You should use BTSTask in new scripts, and convert your old scripts to utilize BTSTask as BTSDeploy may be removed in subsequent versions of biztalk Server. For more information on BTSTask, see Application Deployment Command-Line Reference.

就是说HWS已经完蛋了，希望大家把精力投入到新的流程系统WWF中去。