I want to merge multiple PDF files into one PDF file. I used to be able to do it under file>create pdf, but ever since my computer was re-built, that option is no longer under the file tab. Was this something extra that you had to pay for, or do I have to do something to get this add in. Thank you in advance
You can't do that with Reader. You need to buy Acrobat for that.
Yeah you need one of the acrobat family. To be specific, Acrobat Standard, Acrobat 9 Pro or Acrobat Extended
They have 30 day trial on adobe.com. But check first the system requirements so that it won't mess up your computer.