How do you use OleDb inside a class file?

I have a class file using VB in an ASP.Net website. In that file there is a subroutine that will delete a record from a table in the database. The problem that I am having is that OleDb methods and properties generate the message below:

"OleDb...... is not defiened"

The class file code is below.

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<%@ Import Namespace="System.Data" %>

Public Class Class2
    Sub RemoveTutorFromAllQueues()
        Dim mySelectQuery2 As String = ""

        Dim myConnectionString2 As String = ""
        Dim myConnection2 As New OleDbConnection(myConnectionString2)
        Dim myCommand2 As New OleDbCommand(mySelectQuery2, myConnection2)
        myConnection2.Open()
        Dim myReader2 As OleDbDataReader = myCommand2.ExecuteReader
        myConnection2.Close()
    End Sub
End Class
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How do you define OleDb properties, methods, etc in a class file?