How do I embed a PDF documents into one PDF??

That is, you must link to the opened attachment, NOT another copy of the file which you attached. Click the link tool, open the attachment, go to page, set link IN THAT ORDER.

Did you set the link exactly as I described, to a PAGE OF AN OPEN ATTACHMENT? This is the only way.

On the other computer are you viewing it in Reader, Acrobat, a browser, an email app, what? I'm not asking what is installed, but what is the actual app you are in when you see the page and click the link.

That doesn't work. So I've got the pdf files under the attachment pane on the document but when I click on the links on the table, the pdf file doesn't open up. I'm assuming I need to link them somehow and when I link them on my desktop it works, BUT when I email the document and open it up on another computer, the links don't work.

Use Go to a Page View. Navigate into the attachment. Click Set Link.