Does anyone know how to write an ASP.NET/VB.NET web site that opens MS Word on the client's machine?  In the ASP.NET web application that I'm writing, the user selects a Word document from a listbox.  The user clicks a button to open the selected document and at the same time, special text strings are substituted into the Word document.  Here is code that launches MS Word on the server but I need to launch Word on the client machine.

        Dim myWordApp As Microsoft.Office.Interop.Word.Application = New Microsoft.Office.Interop.Word.Application
        Dim myWordDoc As Microsoft.Office.Interop.Word.Document = New Microsoft.Office.Interop.Word.Document
        Dim strDocToOpen As String = "\\sharefolder.mycompany.com\data\mydocument.doc"

        myWordApp.Visible = True

        myWordDoc = myWordApp.Documents.Add(strDocToOpen)

        myWordDoc.Content.Find.Execute(FindText:="@ANYSTRING", ReplaceWith:="NEWSTRING", Replace:=Microsoft.Office.Interop.Word.WdReplace.wdReplaceAll)

 This is code that's in WEB.CONFIG (for using Interop):

Basically, you cannot do this with ASP.NET (because it only ever runs on the web server).  You would have to develop some kind of client-side browser control, such as an ActiveX that the user agrees to download and install.  That's well outside of the scope of these forums, but here's an article that will give you a start: http://msdn.microsoft.com/en-us/library/aa752037(VS.85).aspx