Jeanne, there's nothing very complex about what you're trying to do here.
Any interactive object such as a button or click box would be used. Just set the On Success action to Open URL or File and then set the drop down option to New window so that your current window remains open.
If testing this on your local hard drive, don't forget to set your Flash Global Security to trust the location of the published files.
Thank you, Rod. I did this and the slide doesn't progress until the
button is clicked. I don't want it to work that way. I want the
button clicking optional. If the user doesn't want to learn more
about the subject and chooses not to click on the button, I want the
objects on the screens to continue. Interestingly, the audio voice
continues to speak to the end of the slide. Any other suggestions?
If you DON'T want the slide to pause automatically, use a click box placed over something designed to look like a button and untick the option in the Properties tab to Pause Project Until User Clicks.
That did the trick! Thank you so much!