[RESOLVED] Cannot Login

Hello. I am currently using ASP on VB .NET and I cannot login go to the next

page.

Here is the code:

VB Code:

Session("UserAuthenticated") = FALSE
If Len(Request.QueryString("cmdLogin")) <> 0 Then
    'dim chkLogin
    Dim txtUsername, txtPassword
    txtUsername = Request.QueryString("txtUsername")
    txtPassword = Request.QueryString("txtPassword")    
    chkLogin = SQLhrd("SELECT * FROM l_login WHERE emp_number = '" & txtUsername & "' AND " & _
    "password = '" & txtPassword & "'")
    If chkLogin.EOF Then    %>
        <script language="javascript">
        alert('Invalid Entry\nIncorrect Login ID or Password');
        </script>
        <%  Else
        Session("UserAuthenticated") = TRUE 
        Response.Redirect("main_admin.aspx?username=" & txtUsername)
    End If      
End If  %>

Notice that I cannot use set on chkLogin. What alternatives will I have to do?