How to have global full-zoom level and site-specific text-zoom?

Hi

I'm currently using same portable Firefox copy on 3 three different PC's and each one has it's own resolution settings so each time I move from one computer to another I have to adjust every website manually.

Now Firefox 3 has 2 types of zoom: full-zoom (including pictures) and test-only zoom. As I understand these two are independent. So the best solution for me is to use full-zoom to adjust computer-specific zoom level and to use test-zoom to adjust test size for some sites (I do it frequently).

So the problem now is to find a plugin that will allow me to do such a trick. I tried "No Squint" but it can make only both zooms global or local.

Any help gratefully appreciated.