asp.net 2 e adodb

[mario88]

Ho alcuni siti su Aruba
fino a ieri funzionava questo codice:
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Dim Cn
Dim Rs

Cn = Server.CreateObject("ADODB.Connection")
Rs = Server.CreateObject("ADODB.recordset")
Cn.CursorLocation = 3
Cn.ConnectionString = "provider=microsoft.jet.oledb.4.0;data source=" & Server.MapPath("/mdb-database/fdp.mdb")
Cn.Open()

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ora non funziona più e da questo errore:
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Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.

Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Source Error:
Line 7: Dim Rs 'As ADODB.Recordset
Line 8:
Line 9: Cn = Server.CreateObject("ADODB.Connection")
Line 10: Rs = Server.CreateObject("ADODB.recordset")
Line 11: Cn.CursorLocation = 3
Source File: D:\Inetpub\webs\edilbrunait\WebSite1\Default.aspx. vb Line: 9
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Come posso fare per risolverlo?
E' molto urgente
Grazie

[Araden]

Errore