[VB.NET] How to share class library + Using service reference on PDA

How can i share a class library between a PDA and a Desktop project?
I now it is possible between the PDA projects and between Dekstop projects but is it possible to share them in combination? I want this because it`s a way to share models witch are used in further building of applications.

I`m busy with a project where i want to build a communication between a PDA and a server. Now i can setup a Service on de server witch is available from the pda but i need "NetCFSvcUtil.exe" to create the classses for connecting to the server.

With building a webservice i can use the function inside .NET. I want to run the service from a movable executable so there is no IIS required. Does someone now a solution for this?

Thnx.