A Request To Send Data To The Computer Running IIS Has Failed

We have developed a Winmobile 5.0 application using VS2005 and Sql 2005 CE. We have successfuly installed the Server Agent on the web server and using the url 'http://websitename/rdatest/sqlcesa30.dll' have received an acknowledgement from the server agent. When we set up the Web Syncronization Wizard we kept things simple and opted for anonymous access. However, our Sql 2005 is based on a separate dedicated server which can be accessed by the web server. Our website, also written in VS2005, uses the following connection string to access the Sql 2005 database for our website.

"server=172.18.22.222; database=Audit; uid=steve; pwd=letmein"

When using the following code in our PDA application we have tried the above string as well as another interpretation with the same resulting error 'A request to send data to the computer running IIS has failed, for more information please see HResult'. The code we are using is..

Using rda As New SqlCeRemoteDataAccess()
Dim sCon As String = "Provider=SQLOLEDB;Data Source=172.18.22.222; Initial Catalog=Audit ; UserID=steve; Password=letmein"
Dim sCon As String = "server=172.18.22.222; database=Audit; uid=steve; pwd=letmein"
rda.InternetUrl = "http://websitename/rdatest/sqlcesa30.dll"
rda.LocalConnectionString = "Data Source=Program FilesTestSysTestdata.sdf"

Try
rda.Pull("Detail", "SELECT Details, Actions FROM Detail", sCon, RdaTrackOption.TrackingOff, "DtlErrors")
Catch sqlCeEx As SqlCeException
RecError( sqlCeEx.ToString)
End Try
End Using


Having tried both connection strings we feel the error is caused by something else possibly on our dedicated Sql server. Would really appreciate any help.