I trialed Adobe Acrobate pro 8.1 and found joboption
PDF/X1a:2001 but I bought standadard version and it only had
PDF/A-1b:2005. What is the differences and is there a way to
download PDF/X1a:2001 someplace.
The PDF/X1a is an archive format standard of a PDF and not
product.
Try asking your question in the Acrobat Windows or Acrobat
Macintosh forum, as these forums deal with the Acrobat Standard of
Professional products and not the conferencing product Acrobat
Connect.