Imports Microsoft.Office.Interop.Excel

Public Class TransferTool

Private Sub btn_PrevData_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btn_PrevData.Click
Dim wkbk As New Microsoft.Office.Interop.Excel.Workbook
wkbk.Open(Me.txt_ImportFile.Text)

strWrkBkNm = wkbk.Item(1).Name
wkbk.Close()
wkbk = Nothing

Gives an unspecified error, does anyone know why this will not run? Do I
need to install something?

Thanks,
Paula