The Skype certified Y*Cable turns your wired PIP*Phone, Penelope*Phone and P*Phone into a VoIP-Phone when used with a PC (and Mac too if used in combination with an iMic or similar device - available from Amazon).
Just plug your Hulger phone into the Y*Cable and in turn into your PC and you are ready to use VoIP services such as Skype.
Y*Cable for Hulger Phones