I do not know for VPN, I use ssh. It is very simple and does not require any system administration right. Install a proxy (squid) on your Amazon EC2. Install putty if you are on windows and launch it with port forward using the option -L: putty -L 3128:127.0.0.1:3128 user@host
Add the option --proxy-server=127.0.0.1:3128 on you chrome shortcut and that's it.