I think you'll be out of luck, I'm afraid. You need something significantly more complex than a simple editor. You need a full IDE replacement, incuding Forms designer, all the necessary design-time licences (which were never redistributable and without which you cannot use most of the controls), and a full-blown compiler ...
You're best bet - and I realise you don't want to hear this - will be to try and source a copy of VB6.