Hi Diderick,
You don't want to open the attachment file, just "save as". Open the E Mail Michael sent you so that you can see the attachment just below the address header. Left click on it to highlight it, then right click to open the dialog box. You will have some options listed, one of them will be "save as". Run your cursor down the list until that function is highlighted and click on it. The file is now saved to your clipboard.
Now you have to open your "Programs" File to access the Model folder. Go to your Start menu, click on the Windows Icon on your toolbar and when it opens, click on "Computer". When that opens, select your main drive, usually listed as "C:". When that opens run down the list until you locate the "Programs" File and open it. You are looking for the Gremir Models file with "006-HMS Savage" on it. Open it, right click on your mouse and you will see the options list again, this time the "Paste" command will be the one you want to click on. That transfers the saved file from the E Mail attachment to the Model file. Close that all down then click on your Gremir Models file on your desktop, when it opens you should be able to open up the model pages at this point.
The first time you do this it can be a real trip, but once you do it properly you will see how it works and it really is easy. Remember, you aren't trying to open the file, just saving it and transferring it to the model folder so that it realizes that it is unlocked and it is okay to show you all the pages listed.