Dual CS4 CS5 install wacom setting weirdness

Question

I have PS CS4 (64-bit) and PS CS5 (64-bit) installed on a wintel machine running Win7. If I try to adjust the wacom (Intuos 3) settings for PS CS5 it has no effect, it will only access the settings I've put in in CS4. I'm sure someone else must've experienced this problem. How do I get CS4 and CS5 to recognize their wacom settings respectively?
I've experienced this before and I remember remedying it but I don't remember how I accomplished it, but that was on an XP rig, too...

Answer 1

Thanks for your help. I know I've fixed this before but I don't remember how. Figuring out how to even word my query makes it difficult to research. The problem is weird because the two photoshops are in discrete folders. It just occurred to me that possibly this is a naming issue? Perhaps, the wacom settings aren't savvy enough to differentiate two different .exe files that are named the same, even though they are in two different locations? Maybe, if I rename the CS5 .exe to PhotoshopCS5, or Photoshop2? I'll try it and see if that works.
...well, that was a bust. It must be because it's early still? Of course I couldn't just rename the .exe file, that would break all of the connections to it and make it unusable. Duh. So much for that hypothesis.