asp login validation with database
===

i have login in my asp page req name/pass and button
i create the conntionstring to my database
and sqldatasource with the qurrey well here the sqldatasouce

    <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
        ConnectionString="<%$ ConnectionStrings:CarRentalConnectionString %>" 
        SelectCommand="SELECT * FROM [Customers] WHERE (([UserName] = @UserName) AND ([PassWord] = @PassWord))">
        <SelectParameters>
            <asp:ControlParameter ControlID="uname" Name="UserName" PropertyName="Text" 
                Type="String" />
            <asp:ControlParameter ControlID="pass" Name="PassWord" PropertyName="Text" 
                Type="String" />
        </SelectParameters>
    </asp:SqlDataSource>
my problem is i dont know how to active/execute it
and how do i get the data thats return from the qurrey
i have a feeling am going at this at the worng way (hope am worng)

hope one of u can giv me a tip or point me in the right direction :)<br>
thx in adv