[BBLISA] Help configuring laptop and dialup Inet gateway

[Scott Ehrlich]

I want to experiment with configuring my laptop (Debian Linux or Microsoft
OS from DOS 6.22 to Win XP) with modem as a dialup Internet gateway to
help bypass my cell phone provider's data charges and turn my home number
into an ISP. I'd also get a data/voice detector for the line.

OS/application-wise, what would I need to do, specifically, to get this up
and running?

I have a cable modem connected to a Linksys befsr81 broadband device, then
my PCs branch off that.

Thanks.

Scott