• set path in command prompt to your dotnet framework folder & SDK's bin folder. As simple example is shown here
  

  path = %path%;C:\Program Files\Microsoft.NET\SDK\v1.1\Bin;C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322;
  

• Use the WSDL tool to generate proxy for all the webservice pages to be consumed. A simple example is as below:
  

  					 wsdl http://localhost/TA/services/ActionOnCard.asmx?WSDL
  					 wsdl http://localhost/TA/services/Template.asmx?WSDL
  					 

• Now you will get a consuming proxy class for each webservice file from there. eg:

  					 ActionOnCard.CS
  					 Template.CS
  					 

• Compile those proxy class files into a library file. for eg:

  csc /r:system.web.serviceS.dll /r:system.xml.dll /t:library /out:bin\Arun.Services.dll  ActionOnCard.cs Template.cs

• You have got the webservices within a dll file. Consider as if you are using your own dll file and design your project.
• Everytime the code gets executed, it will get the business logic or whatever is stored in the webservice from there.

Its simple. Isn't it?