Edit 10/12/2006: the site accustudio.com has lot of visual resources for virtual designers and painters; high quality photos of different subjects like objects, plants, textures. It worth a visit, it's a pleasant site to navigate too.
Very nice list you have compiled there! In fact, www.calclassic.com/repaint.htm is the website I first went to when trying to make repaints for the first time. Simmers Paint Shop was another place where I asked a couple questions.
I'm sure newcomers to the repainting world will appreciate to have a place, or list I should say, to start at!