Please, can sombody help me with this problem.

I have created a web application, in visual studio 2005 professional. This
application needs to convert some string values, from an externally stored
SQL database table, to decimals. When the application has been compiled and
is running locally in the computer everything works fine, all calculations in
the application end up correctly.

The problem comes when the application  is running at the web server (an
extern SQL Server), then all calculations goes wrong, badly wrong!!!
 
0,46 * 0,56  ---> 0
123,456   --->   123456

and so on...  Why??

------------------------
Example, calculation from code:

tSum = Round(totSum + (NullSafeDecimal(reader.Item("column1")) *
NullSafeDecimal(reader.Item("column2"))), 2)

'****************************************************
   ' NullSafeDecimal
'****************************************************
   Public Shared Function NullSafeDecimal(ByVal arg As Object, _
     Optional ByVal returnIfEmpty As Integer = 0) As Decimal

       Dim returnValue As Decimal

       If (arg Is DBNull.Value) OrElse (arg Is Nothing) _
                        OrElse (arg Is String.Empty) Then
           returnValue = False
       Else
           Try
               returnValue = CDec(arg)
           Catch
               returnValue = False
           End Try
       End If

       Return returnValue

   End Function