Consuming a WCF Service at Client Side

In your client project, right click and add a service reference. A dialog box will open to add the service reference into your project.  For that you need to know the 'address' where the service is hosted. After that enter that base address, and click 'GO'. Service appear will in the listbox. Click OK, it will automatically add a proxy class into project. Then create an object of your service proxy class and access all the interfaces. (All the required configuration, binding, service behaviour will be added in the config file)
Here is the link for more detail:
http://msdn.microsoft.com/en-us/library/cc668183.aspx