How do you make "Actions" in PS:CS2?

My second question in as many days.

I want to make an "action" that will reduce the size of a pile of screencaps so I don't have to do it one by one.

I've been reading the instructions in my Photoshop program but they are not very helpful. I've looked through the memories, but could not find anything on "actions" in PS:CS2.

So my question. Does anyone have a tutorial on how to make actions?

I'm going to google it, but I thought I would go ahead and ask just in case someone knows of a tut. Which would be faster than trying to find one myself.

I want to try making a movie icon. If someone knows of a faster way of getting all the caps into one palette and reducing the size I'd love to know. Would one of the animation tutorials be helpful? Could I do this in Image Ready?

I'd still like to know about the actions though.

Thanks for any help.