Sorry if I got you wrong, but Acrobat 9.0 is a full fledged release, it is not a patch update. If you have installed Acrobat 8.x on your computer, you will have to purchase an upgrade to the latest version. Just in case, I am providing links to the update pages for Acrobat. Choose the link based on your OS. The udpates work only if you have the corresponding base version installed on your computer. For example, you can install the 9.x updates only if you have Acrobat 9 installed on your computer. http://www.adobe.com/support/downloads/product.jsp?product=1&platform=Windows http://www.adobe.com/support/downloads/product.jsp?product=1&platform=Macintosh
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