First, make sure that you are signed into http://testmy.net/ when you do your test. Then, when you want to post a link to your tests, click on "Results" on the upper right. It will take you to the page of your test results. Then copy and paste the URL to the post, like below....
Then, you can just click on the link in the post and it will take you to the page of your results. If you click on my test link above you will see what I mean.
Also, if Hughesnet requested that your test results be emailed to them, you can do the same with copying and pasting the URL of your tests in the email you send to them.
I hope this helps.