1.  Click on the email you've received from BusyBrain.
2.  Click on the paperclip that denotes an attachment.
3.  Click on "Save Attachments"

A pop-up window will open.  This shows you the name of the file as well as where on your hard drive the file will be saved:

You must click on the "Browse" button, so that you can save the file to the stationery directory.   When you click on "Browse", another window will open, and it will show you the navigation of your computer's drives.   You need to:

1.  Double click on "C" drive.
2.  Double click on "Program Files".
3.  Double click on "Common Files".
4.  Double click on "Microsoft Shared".
5.  Double click on "Stationery".
6.  Click the "OK" button.

You should end up back at the "Save Attachments" window, which will now look something like this:

Click the "Save" button, and your new stationery will be saved to the Stationery directory.

Now, to access and use your new stationery!

What most folks don't know is that the tiny down arrow next to "Create Mail" is how you access your list of stationery.   Click on the down arrow, and a menu opens.  This is all of your most recently used stationery.  To select your newly installed stationery, click on "Select Stationery".  

A list will open, and if you saved the file correctly, you'll see it listed.  Just double click on the name.  Not only will your stationery open and be ready for you to use, but it will ALSO now appear as the first choice in your list!    Any time you want to use your new stationery, just click on the down arrow next to "Create Mail", and then double click on your chosen stationery.