Integration of YAF with my existing website

private void CreateUser(String sApplicationName, String sUserName, String sPassword, String sEmail)
        {
            YafMembershipProvider mb = (YafMembershipProvider)System.Web.Security.Membership.Providers["YafMembershipProvider"];
            int? forumUserID = 0;

            if (!mb.ValidateUser(sUserName, sPassword))
            {
                MembershipCreateStatus status;
                MembershipUser forumUser = mb.CreateUser(sUserName, sUserName, sUserName, "question", "answer", true, null, out status);

                // create the user in the YAF DB as well as sync roles...
                forumUserID = RoleMembershipHelper.CreateForumUser(forumUser, 1);

                RoleMembershipHelper.SetupUserRoles(1, sUserName);
                RoleMembershipHelper.AddUserToRole(sUserName, "Registered");

                // create empty profile just so they have one
                YafUserProfile userProfile = YafUserProfile.GetProfile(sUserName);
                userProfile.Homepage = "fwd.com";

                // setup their inital profile information
                userProfile.Save();
            }
            else
            {
                DataTable results =(DataTable) YAF.Classes.Data.DB.UserFind(1, false, sUserName, sUserName, sUserName, null, null);
                //DataTable results = YAF.Classes.Data.DB.UserFind(1, false, sUserName, sUserName);
                if (results.Rows.Count > 0)
                {
                    forumUserID = (int)results.Rows[0]["UserID"];
                }
            }

            FormsAuthentication.SetAuthCookie(sUserName, false);
        }