You can use the CuteEditor to edit the content pages of ASP.NET 2.0 by setting Editor.AllowEditServerSideCode Property to true.

Editor.AllowEditServerSideCode Property

By default Cute Editor doesn't allow edit the Server side code. When this property is set to true, Cute Editor will allow edit the Server side code. (<%@ Page Language="C#" %> <%=MyString %> <asp:textbox id="textbox1" runat="server"></asp:textbox>)

Hope it helps. 

Let me know if you have any further questions. I am little confused about what you are trying to achieve.