Re: Droplets
See http://kb2.adobe.com/cps/907/cpsid_90706.html:
"The 12.0.1 update (of CS5?) creates droplets using native code for Intel processors, and can update previously created droplets to use native code for Intel processors.
Solution 1: Update Photoshop CS5 with the latest updates. Then drag your old droplets onto the Photoshop application icon. An updated version of the droplet is created in the same folder as the old one, with (CS5).app at the end of the name."
If you have CS4 or older, you're out of luck.