Thanks. that was part of the problem.... I'm also using Apache not IIS, and couldn't succesfully locate the ROOT folder for the web app hosting the service. I switched to IIS, and, got it working which is enough for me for now. Thanks again

The most of your questions are already answered by our Codeproject Silverlight Experts. I will just add one more point here. If you really want to return the DataSet from Service then you may want to check-out the code written by one of our Silverlight community members. The link for that is here[^]. But returning the dataset from service is not a good idea but the most of .NET developers who are familiar with .NET 1.1 and 2.0 still prefer to use DataSet. Another thing is that DataSet will not be supported in Silverlight. Thanks and Regards, Michael Sync ( Blog: http://michaelsync.net) Microsoft MVP (Silverlight), WPF/Silverlight Insiders