Here you can read about installation process of this module and more helpful tips.
Installation:
download module and unzip it in your module directory
download PapApi.class.php from your PAP installation or from this link and copy it in same folder where is 'uc_post_affiliate_pro' module
try default 'demo' acccount, you should get some testing data from demo PAP installation if it works
use your own data: merchant's username, password, link to PAP online installation
use Post Affiliate Pro
let know your website visitors and future affiliates about commisions they can get
let's make business