please explain in detail for idiot (me) how to pptp vpn

I'm still really new to linux and cannot figure out how to setup a pptp vpn. all the literature I've read so far talks like I know something about it. everything has talked about some config or script file I have to edit but nothing tells me which one or where it's located. I also think that would answer several of the vpn questions that are asked cause many people ask similar questions but nobody answers. I need it in plain english cause I'm a windows native :oops: and I'm trying to prove to all the guys at work that I can do anything with my knoppix that they can do with windows and connecting to a remote location has got me stumped.