Sweet!! Thanks for the help! I am having a problem, though. I have some action sets downloaded, and I tried to load them, but my Photoshop wants an .isa file for some reason, not .atn. I have CS3, so that might be why, but I don't know.
I made most actionsets in version CS3 and the action format is .atn so it should work. ISA files are not used for normal actions. You could try copying the sets to your actions folder in photoshop that way they will be loaded on startup.