This HOWTO assumes that you are using a Linux 1.2.x kernel with the PPP 2.1.2 software or 1.3.x/2.0.x/2.2.x kernel with the PPP 2.4.0 software.
This HOWTO will cover version 1.6.18 of KPPP.
This HOWTO will cover version 1.41 of WvDial.
This HOWTO will cover version 0.03 of PPPoE.
This HOWTO will cover version 1.18 of Linuxconf.
Please try to use the latest versions of software, as many bugs are fixed as time goes on.