VPN client needed

Does anyone know of any free VPN client software? I need it to access my uni network remotely, but I can’t be bothered to pay!

By the way, I just tried SecurePoint Firewall and VPN, and it nearly entirely broke my computer. Even Safe Mode was half-broken. Not to be attempted!
Any other suggestions?

OpenVPN http://openvpn.net/
You’ll have to know what you’re doing though. And I’m not sure if that supports third party servers or not. Worth a look.