Push model using web services?

[Kim.Desruisseaux]

I have developed a few reports using the push model with the winform report viewer. Here is what I am currently doing.

Public Sub InformationClassificationStructure(ByVal ds As DataSet, ByVal Title As String)
If Not ds Is Nothing Then
Dim cr As New RMTree3LevelReport
cr.SetDataSource(ds) '<<-- at runtime, switch to the dataset as the datasource
'set som text objects
Dim txtObj As CrystalDecisions.CrystalReports.Engine.TextObject
txtObj = cr.ReportDefinition.ReportObjects("Text20")
txtObj.Text = title
'show report
CrystalReportViewer1.ReportSource = cr
CrystalReportViewer1.Show()
End If
End Sub

What I would like to do is convert this code to use a crystal report as a web service. I have searched and read all I can find to no avail.

I followed the instructions to publish a report as a web service, but cannot figure out how to set the data source.

Another question. Can one web service contain more than one crystal report?

Any help would be appreciated.