prob with microsoft word document in vb

[mars]

im using word.application to open a word document in vb.net with these dll files.
Microsoft.Office.Interop.Word.dll
Microsoft.Vbe.Interop.dll
office.dll
stdole.dll
here is the sample code.code is working fine with these dll.
Dim app As New Microsoft.Office.Interop.Word.Application



app.Visible = True
Dim doc As New Microsoft.Office.Interop.Word.Document '=new app.Documents.Add()
is there any way with which we can open the document within a form.