That wasnt that hard....now I can bind my node properties to the underlying object...

 Very nice...

public class WhitNode:UltraTreeNode,IBindableComponent
    {

        //public new event EventHandler Disposed;
        private BindingContext bc;
        private ControlBindingsCollection cbc;
        //private ISite s;

        #region IBindableComponent Members

        BindingContext IBindableComponent.BindingContext
        {
            get
            {
                if (bc == null) { bc = new BindingContext(); }
                return bc;
            }
            set
            {
                bc = value;
            }
        }
        public BindingContext BindingContext
        {
            get
            {
                if (bc == null) { bc = new BindingContext(); }
                return bc;
            }
            set
            {
                bc = value;
            }
        }
        ControlBindingsCollection IBindableComponent.DataBindings
        {
            get
            {
                if (cbc == null) { cbc = new ControlBindingsCollection(this); }
                return cbc;
            }
        }
        public ControlBindingsCollection DataBindings
        {
            get
            {
                if (cbc == null) { cbc = new ControlBindingsCollection(this); }
                return cbc;
            }
        }
        #endregion

        #region IComponent Members

        event EventHandler IComponent.Disposed
        {
            add { throw new Exception("The method or operation is not implemented."); }
            remove { throw new Exception("The method or operation is not implemented."); }
        }

        ISite IComponent.Site
        {
            get
            {
                return null;
            }
            set
            {
               
            }
        }

        #endregion

        #region IDisposable Members

        void IDisposable.Dispose()
        {
            GC.SuppressFinalize(this);
        }

        #endregion
    }