Customize the File Download Dialog during proogrammatically downloading of files

Hi,

I am trying to download a file from server programmatically using the code snippet given below. A file download dialog box is opening up in the client machine for confirmation. Can I customize that dialog box? I need to show only the Save button (Or keep Open, Cancel button as disabled). Please suggest.

Response.ContentType = "application\octet-stream"
Dim filename1 As String = New String(filePath)
Dim downloadFile As System.I ...