How to remove Adobe Acrobat XI completely from computer

I had/have Adobe Acrobat 9 Standard installed on my computer. We wanted to see what additional services were available through XI.  We downloaded the trial version and when we were satisfied that we did not require that edition, we removed same through the control panel.  Now, PDF Maker no longer works, and the addon Tab only appears in WORD.  As well, when we try to download/open PDF documents from the internet, we are unable to do so.  How do I remove XI completely from my computer in order to allow PDF Maker to work again.  The error I receive is that the server is cannot be loaded.