Posted: Tue Aug 24, 2010 1:19 am
You can run older plugins (which are 32-bit) in the 32-bit version of Photoshop CS4. So you do not need a 32-bit OS to run old plugins, you just need to use the 32-bit version of Photoshop.
The plugins folder of Photoshop 32-bit is located at
C:\Program Files (x86)\Adobe\Adobe Photoshop CS4\Plug-Ins\
The plugins folder of Photoshop 32-bit is located at
C:\Program Files (x86)\Adobe\Adobe Photoshop CS4\Plug-Ins\