A question on VB.NET

[scorpions]

Hi to all,
I want to run excel solver in a VB.NET routine.
I have installed VSTO but when I want to compile my program (I have written it in VB.NET language in a software, it is not in the Visual Studio 2005 main Program) it finds an error: "Namespace or type 'Interop' for the Imports 'Microsoft.Office.Interop' cannot be found."
Do u know the reason?
The code for more information is this:

Imports Microsoft.Office.Interop
Imports System.Runtime.InteropServices

Private Sub bSolveExel_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles bSolveExcel.Click

Dim wb As Microsoft.Office.Interop.Excel.Workbook
Dim ExSheet As Microsoft.Office.Interop.Excel.Worksheet
Dim result as Double

Try
wb = ExApp.Workbooks.Open("E:\Excel-Sheet.xls")
ExApp.Run("SOLVER.XLA!Auto_Open")

ExApp.DisplayAlerts = False
ExApp.Visible = False

wb.Activate()

ExSheet = ExApp.Worksheets("Table1")
ExSheet.Activate()
.
' Code to save parameters in Excel Sheet
CType(ExSheet.Cells.Item(3, 2), Excel.Range).Value2 = TextBox.Text
.
' Code to copy result to the variables
result = CType(ExSheet.Cells.Item(9, 2), Excel.Range).Value2

ExApp.DisplayAlerts = False
ExApp.Quit()

Catch ex As COMException
MessageBox.Show("Error accessing Excel: " + ex.ToString())
Catch ex As Exception
MessageBox.Show("Error: " + ex.ToString())
End Try
End Sub

After that I wrote some Macros in the Excel Sheet to start the calculation

Does any body have an idea?
Thanks in advance.

[RobDog888]

Did you install the PIAs for Office? Link in my signature for more on Office Interop.