no need to get rude I'm not thick, all I'm telling you is what I've done in the past and the software I have and the way it has worked in the past!

This is what we have and we have always used it to create PDF's.
Ok, let's try and unravel this.
Reader CANNOT create PDF files by itself. But you can pay for an additional service each year, called Adobe PDF Pack. Maybe $79. This would have been worth mentioning, as it would have avoided the misunderstanding. This makes the Create PDF button work in Reader (but see below). Reader doesn't create PDFs but it sends stuff to Adobe to do the work, which is convenient (but not essential), see below.
Adobe's position is that you need the latest Reader to use these add-ons. Reader X is NOT the latest Reader. It's a very, very long way from being the latest Reader. You cannot, however, run the latest Reader (called Acrobat Reader DC) on Windows XP. But you could have upgraded to Adobe Reader XI (11). This is not an update, you have to choose to download it. Still may not work with PDF Pack, because it still isn't the latest.
So, what can you do? Well, you should probably be on Reader XI because at least it has several years of security fixes. But if you're on Windows XP, security fixes may not be your main interest. But you can use the service with a browser. This is the help page for PDF Pack: How to Use Adobe PDF Pack In short, you can go to https://cloud.acrobat.com/convertpdf