1. Go to Firefox menu > Preferences> Applications.
2. In the list, search for the entry for Microsoft Powerpoint.
3. For this entry, change its Action to Always ask.

See these articles for more information:
Applications panel - Set how Firefox handles different types of files.
Manage file types and download actions in Firefox.


Please note that you should not provide your email on these forums. All questions would be answered through the forums only. However, using the options on bar on the right, you can setup alerts so that you receive an email whenever someone answers your question.

I am very sorry, but after getting your e-mail reply with a procedure for finding your reply (following it step-by-step) when I got to : "Applications" I was unable to find any mention of "Microsoft Powerpoint". Did you forget to post it ????

I surely would appreciate it if you would instruct me correctly, or even better, type your answer on an e-mail message directly to me, which I would prefer !!!!

Thank you,

Karl Grosch, e-mail: kgrosch@comcast.net