How to I change the “Create User” button to an ImageButton?

[vincent90152900]

I like to Customize the layout of a CreateUserWizar d component and I would like to chnge the “Create User” button to an ImageButton.
How to do that?
Following is my codes.

[HTML] <asp:CreateUser Wizard ID="CreateUserW izard1" runat="server" OnCreatedUser=" CreateUserWizar d1_CreatedUser" Height="120px" Width="241px">
<WizardSteps>
<asp:CreateUser WizardStep runat="server">
<ContentTemplat e>
<asp:Label ID="Label1" runat="server" Text="UserName: "></asp:Label>
<asp:TextBox ID="UserName" runat="server"> </asp:TextBox>
<br />
<asp:Label ID="Label2" runat="server" Text="Email:"></asp:Label>
<asp:TextBox ID="Email" runat="server"> </asp:TextBox>
<br />
<asp:Label ID="Label5" runat="server" Text="Password: "></asp:Label>
<asp:TextBox ID="Password" runat="server"> </asp:TextBox>
</ContentTemplate >
</asp:CreateUserW izardStep>
<asp:CompleteWi zardStep runat="server">
</asp:CompleteWiz ardStep>
</WizardSteps>
</asp:CreateUserW izard>[/HTML]