use Facelets, not JSP (universally accepted and Facelets is now included in JSF 2.0 spec).
what custom tags do you need that's missing from Facelets/Richfaces/Seam libraries??
All right I will like to learn how to write a simple UIComponet. Kind of a taglibrary. Main intent is to learn something.
I want this to work with Seam.
I need some guidance on how to create a custom UIComponent for seam.
As Ron mentioned, that is JSF related and not specifically seam. So if you google/yahoo/... on UIComponent with custom or whatever creative query you can come up with, you will be guided...