I just make a child action like this:

@{
    Layout = null;
}
<form method="post">
    @if (!String.IsNullOrEmpty(ViewBag.LoginError)) {
        <div style="color:red">@ViewBag.LoginError</div>
    }
    @if(String.IsNullOrEmpty(ViewBag.Username)){
        <div><label for="name">Username:</label>
        <input type="text" id="username" name="username"/></div>
        <div><label for="password">Password:</label>
        <input type="password" id="password" name="password"/></div>
        <div><input type="submit" id="submit" name="submit" value="login"/></div>
    } else {
        @ViewBag.Username
        <input type="submit" id="submit" name="submit" value="logout"/>
    }
</form>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Security;
using Umbraco.Web.Mvc;

namespace W3S.Controllers
{
    public class LoginController : SurfaceController
    {
        //
        // GET: /Login/
        public ActionResult Login() {
            MembershipUser msUser = Membership.GetUser();
            if (msUser != null) {
                ViewBag.Username = msUser.UserName;
            }
            return View();
        }
        [HttpPost]
        public ActionResult Login(String username, String password) {
            MembershipUser msUser = Membership.GetUser();
            if (msUser == null) {
                if (Membership.ValidateUser(username, password)) {
                    FormsAuthentication.SetAuthCookie(username, true);
                    Response.Redirect("/");
                } else {
                    ViewBag.LoginError = "no user found!";
                }
            } else {
                ViewBag.Username = msUser.UserName;

                if (Request["submit"] == "logout") {
                    FormsAuthentication.SignOut();
                    Response.Redirect("/");
                }
            }
            return View();
        }

    }
}

Thank you very much for your reply.   How should I use this (sorry, im not a web developer) to allow access to the site ?

If you're no developer then it's not so easy to build.. sorry don't know any module for it because it's so easy to develop for me!

Perhaps you could point me in the right direction ?         Not a developer;  have plenty enthusiasm.

I write Umbraco code in a real developer way, it's not really possible to do it in a little post on a forum :)

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