Word to Notepad?

Hi everyone. I have been using the FTP for a while now. I just opened it tonight, ( I use a PC ) and it opened up to edit with Word, and not Notepad, which I normally use. Now my website just shows the HTML and not actually what it's supposed to show. Can someone help me ASAP please?!
Thank you!

Hello ..

Menu: Tools->Settings "Remote Editor"

Change Default Action from Shell to "Viewer configured in General page"