Rick, in order for the "add open files" to be available to click on, you need to have the images open in CS5.


You don't have to open the files to stack the images. If you don't want to open the files directly, you can still run the script using the Browse. File, Scripts, Load Files into stack, then choose Browse. Find the images from there, then they will show up in that same window.


If you're not seeing the Edit, Auto-Blend layers, it's because you haven't selected all the images in the layer palette.


In Photoshop CS%, over on the right, you'll see your images as thumbnails. When they are loaded into a stack, only the bottom image is highlighted. Select all of them with your mouse, then the Auto-Blend layer will be visible in the Edit.


When you Auto-Blend layers, you'll see the bottom option selected: Stack Images (leave the seamless tones box checked).


Now, CS5 will go to work on the images. When it's finished, you'll see the differences between each image, compared to the others.


What you want to do now is to go Layer, Flatten Images.


Your stacked image is now ready to do further work on in CS5.


Alan