Microsoft Word for Mac - All menus have vanished!

I took this photo of my computer screen when using Microsoft Word for Mac to show you what has happened to it as it's so hard to describe. I use Office 2008 for Mac on my Mac Mini and it's been working fine for two years. The last week when I opened a word document someone emailed to me, it opened without any menus, as in the photograph
So there is no File, no Edit, no View, no Format etc. - nothing!! Except:
Document Elements, Quick Tables, Charts, SmartArt Graphics, WordArt
with Document1 along the top.
It doesn't look like a normal word document. The only way to print is CmdP, and CmdS works to save but there isn't an option to choose where to save the document or change the file name.
I don't understand how it happened or how to get Word back to normal! Please help!

G'day and welcome to the forums.

Check with whoever mailed you the document as it looks old, old old.

Does Word work when you open it normally from your application folder?

Is that a .docx file?

If so, you need Open XML Converter, which I have in my Applications Folder.

Thanks, but it isn't just one document, it's doing this for every single Word document ever since I opened the one they sent me last week, including documents I created myself before this happened.

Run this ~/Applications/Microsoft Office 2004/Additional Tools/Remove Office/Remove Office
Then reinstall Office