I just uploaded an updated version of my MSMQ Activities for Windows Workflow Foundation. You can download the updated code from here.

Here are some of the changes:

• Updated to work with the July CTP of .NET FX 3.0
• Added a new MsmqDirectReceiveActivity class. This one also allows you to receive a message from a queue, but it is not an Event-Driven activity; instead it will directly try to receive the message from the specified queue. This is useful when, for example, you need to receive the message inside of a transaction scope that contains other activities.
• A few bug fixes, including a fix for how the Label property of the receive activities was getting serialized in XAML which caused the designer to throw errors when reloading the workflow.