My machine as an smtp server?

[Titanium Man]

Hello everyone, I was wondering if its possible to use my machine as an smtp server, and if so, how to set it up. Here's my sob story: I got DSL the other day (a big change from dialup) but outgoing mail to my mac.com account wasn't happening. I had to change my smtp server to the smtp server of my isp, and disable smtp authentication. Now, I've checked out this hint:

http://www.macosxhints.com/article.p...20328002513298

and couldn't get it to work for me. I have a powerbook, and would like to be able to send mail from various locations, so the reponses toward the bottom of the hint referenced above (about using sendmail as an smtp server) looked intriguing to me. I currently have sendmail running, and can send myself little love notes using the 'mail' command. What should I do now to be able to use my machine as my own smtp server (if that's possible in my situation)? Here's my setup:

Titanium PB 400mhz
OS 10.1.4
Developer's tools installed
sendmail enabled
Earthlink DSL (home) LAN (work)
Transparent Terminal windows

Thanks!