Hi,

Did you have already created the workflow design and you now want to instanciate it ? or did you need help to create your workflow design?

If you need help to design the process, the better for you is to have a look to the K2 documentation. You can open the K2 User Guide (start menu >> Programs >> K2 blackpearl >> K2 blackpearl documentation)... after have a look to the "K2 tutorials" section and espacially into "Building a process in the K2 Designer for Visual Studio".

After to connect your Windows Service with the instanciation of the process you will design, you need to use the SourceCode.Workflow.Client assembly. In the help file, see the "K2 developer reference >> Class library reference >> SourceCode.Workflow.Client assembly". The methods you need to use will be :

1. 
   
2. Open (a connection to the K2 server)
   
3. CreateInstance (of your process)
   
4. Data setting (I guess)
   
5. StartInstance
   
6. Close (connection)

This is really general but I hope this will give you a way to follow :-) 

Hey nj, if you do not have k2 documentation, go here http://www.k2underground.com/files/folders/technical_product_documents/entry23558.aspx.

 I would go through documentation first, you will find many handy functions and code snippets in it.

Here's a good article with an attached project showing how to instantiate an instance of a process using the SourceCode.Workflow.Client assembly.

http://www.k2underground.com/blogs/smoreclientcode/archive/2008/12/15/starting-k2-process-from-a-web-service-and-beyond.aspx