I am installing this as root so if you are trying as pi please ensure you put sudo before hand
Install Hamachi on your Raspberry Pi copy and paste the below
sudo wget https://raw.github.com/txt3rob/hamachi-pi/master/hamachi.sh sudo chmod 777 hamachi.sh sudo ./hamachi.sh
follow the on screen instructions and your raspberry pi will be added to your hamachi network.
go to logmein and then go to networks and ensure you see the pi approval request and then approve and then simply add it to the network you want.
Job Done VPN even if your crappy o2 router doesnt want to allow a PPTP VPN......
If the link doesnt work comment and i will update this post
Need any help or wish to donate to me my email address is firstname.lastname@example.org