iam getting Compiler Error Message: BC30002: Type 'adoconnection' is not defined at line 6..

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1. <%@ Page Language="vb" %>
2. <%@ import Namespace="system.data" %>
3. <%@ import Namespace="system.data.ado" %>
4. <script runat="server">
5.
6. dim cnn as adoconnection
7. dim cmd as adodatasetcommand
8. dim ds as new dataset
....
....
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can anyone pl help me!..

ThanX in advance