WCF service or Web Service

Question

Hi,

            In our VB.net windows application, we need to communicate with remote data base servers and get data from those servers provided a unique id number for particular user. And use this fetched data in our window application.

 

         What will be the right approach to accomplish this task. whether to create a web service or wcf service . and how to handle request time outs if the remote servers are busy. Please help me , I am confused in deciding and getting started.