Thanks for the help. I'm partway there. Turns out I already had Samba installed on my system -- I probably didn't it via my package organizer. I didn't have its documentation installed, so I installed that.
I've done the steps you've described. However, I've hit an impasse. Frustrating, so frustrating. In the Windows File Explorer, I can see the Linux machine, but I can't access it. Here's what I'm seeing:
http://tommeinenphotography.com/netw.../cantlogin.gif
The Okay button on the browse for folder dialogue box is always greyed out. My Windows machine is named Athlon_screamer and my Linux one is named Toms-jukebox. So I right click on Toms-jukebox and choose Open or Explore. It doesn't matter which. I'm always prompted for a user name and password. I type my user name "tom" in and my password. No luck. It never lets me in. It changes the user name field to TOMS-JUKEBOX\tom. I try over and over, but can't get in. I also don't see the folder I shared under Toms-jukebox.
I thought maybe Windows wasn't seeing the drive because of its being an ext3 one. Maybe that utility I installed in Windows isn't working. So I used Gparted to convert the drive to a FAT32 one. It wouldn't let me make it an NTFS one. Still no luck. I can't get in. Extremely frustrating. I know for certain my Linux password is correct. I haven't changed it, and I have it written down. I can log into the Linux machine just fine with it.
On the Linux machine, I went to System ==> Administration ==> shared folders. I clicked on the shared drive and then on properties. In the "shared through" field I've tried both Windows networks (SBM) and Unix Networks (NFS). I can't get either to work. On the Windows machine, I've tried typing in my user name as it's shown on the Linux machine: /home/tom. Windows doesn't let me do it that way. It gives me a speech balloon: "username@domain DOMAIN\username". So I try TOMS-JUKEBOX\tom -- doesn't work. I try tom@toms-jukebox. @#$% thing still doesn't work. I tried right clicking and choosing properties, and it says I don't have the appropriate rights to access the server.
Gonna take some time away from the computer now. It's driving me nuts. If anyone knows what's wrong, I would very much appreciate suggestions. Your help is greatly appreciated.