Thanks GarryP, very kind of you to come back so quickly.
So, i already have PDF reader DC on my computer and the pdf opens perfectly and runs perfectly quickly (i.e. it all pops up on the screen quickly). So i know it works, and my computer is fine. I used to have the font embedded, but read an article which said it all renders faster if you dont - so i took them out.
So, this is the problem. when i just open the pdf, it opens in a programme which just has a blue e, i assume its a windows thing thats like google (possibly explorer). i assume that if i were to email my pdf brochure to anyone (friends, clients, etc). They would just click on the pdf in the email and it would open up on their computer. Just like it does on mine. Well. Then it would automatically open up in "e" (if thats explorer) and wouldnt work properly.
So, I guess the next question is, how do i get the pdf to open and work on a normally set up computer - which is what the people i will be sending it to - have? everyone i send the end brochure to will have windows (word, powerpoint, xls) and so i assume the "e" set up on their computer too?
Danny