Access Denied problem

i have found this website that teaches hw to Automate Microsoft Excel from Visual Basic .NET

http://support.microsoft.com/default.aspx?scid=kb;en-us;301982

I cannot find Microsoft Excel Object Library in the COM tab instead the nearest i can get is Microsoft Excel 8.0 Object Library. After i v tried adding this Imports Microsoft.Office.Interop but gave error as there is no such namespace. I am using a web based application instead of windows application.

All these difference i think are no big deal but when i tried running the code, it gave access denied.
below is the error

Access is denied.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.UnauthorizedAccessException: Access is denied.

The ASP.NET process is not authorized to access the requested resource. For security reasons the default ASP.NET process identity is '{machinename}\ASPNET', which has limited privileges. Consider granting access rights to the resource to the ASP.NET process identity.

To grant ASP.NET write access to a file, right-click the file in Explorer, choose "Properties" and select the Security tab. Click "Add" to add the "{machinename}\ASPNET" user. Highlight the ASP.NET account, and check the Write box in the Allow column.

Source Error:

Line 31:             Dim oExcel As Excel.Application = New Excel.Application()

Can anyone tell me which file to give the access rights.

Thanks