XYplorer 8.40 has been released on 14-Sep-2009. Here's a quick introduction to the main new features:
For example, here you see a user-defined button that will open the selected file(s) in Photoshop:
How to create this button? Add a new user button via Tools | Customize Toolbar..., then right-click the new button and select Edit..., and then do the following:
Of course you are free to create and use your own custom icons (ICO files) for your buttons. With regard to the script, multi-line scripts are supported as well as multi-script resources, so your button can do everything you can do with XYplorer scripting. You could e.g. popup a little menu with applications to open the selected files with, or with locations to go to, or destinations to copy files to, or with scripts to run, etc.