Connecting to Custom Win Service

Question

I've read the article "Creating a Windows Service, By Mahesh Chand January 23, 2001" and created my own service which runs fine. Now i want to make a client app to access the services public members, but i don't know how to access them. I've used a ServiceController and i can start and stop it etc. But don't know how to get acces to my custom functions inside the service. Any ideas? oh, i'm using .net2.0 and Vis C# Express 05