$this->bbcode_second_pass_quote('Scarfish', 'S')ee this page for a comparison between PPTP, L2TP and OpenVPN: http://www.ivpn.net/knowledgebase/62/PPTP-vs-L2TP-vs-OpenVPN.html. OpenVPN is not PPTP.
On the wiki you can find a guide for setting up OpenVPN.