Correct. They accept component to component, component to suite and suite to suite. They say in two seperate statements that they don't accept suite to component upgrades. PhotoShop CS3 handles most of what I need to do to finish and tune photos, but I want a better RAW editor. The ACR in CS3 hasn't been updated for a while and I'm not holding my breath. I'm currently thinking about Aperture 3 and adding PhotoShop Elements if A3 doesn't do enough for me.
Dale
Have you considered Lightroom??? It is really VERY cool and does a lot!