Its been a while since ive posted a question but here goes

There is a co-worker at work and he has a laptop and he connects with @home service at his house. He brings his laptop to work and wants to connect ti to the DSL service we recently got.

I know how to do this but i dont know how to make it so that he can connect to home and then to work without changing any configuration because he is not so computer literate.

I was told in IRC that VPN could help me with this but im not quite sure how so i would love it if someone helped me out

Thanks