Upload the whole plugin folder to your /wp-content/plugins/ folder.
Set write permission (777) to the plugin dir folders => unprintable-blog/cache AND unprintable-blog/mdpf/graph_cache
Go to the plugins page and activate the plugin.
Add to your template "<?php if(function_exists('gcp_pdf_pdfbutton')) gcp_pdf_pdfbutton(); ?>" as a small button or "<?php if(function_exists('gcp_pdf_pdfbutton')) gcp_pdf_pdfbutton('my link', 'my login text'); ?>" as a textlink. The second text specifies the text which should displayed if you have checked "needs login" and a user isn't loggend in.
(if you wish to open the pdf print in a new tab you may pass "true" for the first parameter)
Requires: 2.8 or higher Compatible up to: 3.0.5 Last Updated: 2010-12-23 Downloads: 1,050