(11/01/2010) For Softimage 2011
This plug-in adds two commands to the contextual menu in the render tree, allowing the user to right-click on a texture node and choose “Open in Photoshop” (or the editor of your choice), or “Show in Explorer.”
It also adds similar commands to the contextual menu in the scene explorer’s clip list…
The first time you run one of these commands, a custom preference will be installed and you’ll need to enter the path to your image editor. Once this is done you’ll be able to run the above commands as expected.