Fernando-

>I'm getting myself involved in learning web app development, with all the happies and problems it takes. After a while (to take a breath!) I wondered: how does people using VB address this problem, ASP, only?

May I suggest you ask this in a VB forum? Not to squelch discussion here, but if you really want a serious answer. No doubt VBers would be happy to describe their favorite methods for developing web apps. Maybe you could report back what you learn.