To install is a simple process

1 - Upload the entire Affiliate Mage Directory to your Wordpress Plugins Directory
2 - Upload the Send.php file to your main domain directroy.  This is the same place where your wp-config.php file is
3 - Activate and Input you affiliate ID's and the License Key  "FREE"  
4 - Now go and make a new Post in Wordpress, you should see little icons in the posting area.  Click these to get the template you want. 
4 - Profit and report back

-Greg Jacobs
For the full line of Mage Tools, please see
http://www.wpmage.com


Is it not working?   If not look up at step #2 as %98 of cases where it doesnt work skipped step 2