Upgrade to Adobe Reader 9.4

[MHN02]

Hi,

We are trying to upgrade Adobe Reader 9.4 from Adobe Reader 8.1.3.

1) Is it required to change any code for older version PDF's?

2) Will there be any documentation available to guide us for upgrading from 8.1.3 to 9.4.

Please let me know if there is anything else we need to think?

Thanks & Regards

MHN