To join a Windows Workgroup (MSHOME, etc)
1. Go to the “System” menu
2. Go to “Administration“
3. Select “Network“
4. Go to the “General” tab
* Host Name: What you want your computer to be named on the network
* Domain: equivilant to WORKGROUP in Windows. Put your workgroup here (ex: MSHOME)
That doesn't work because System->Admin->Network doesn't exist.
The nearest thing I have is System->Admin->Network Tools, but that just lets me do things like ping, whois, tracert, etc. I also have System->Preferences->Network Configuration, but that just brings up my network connections list.
That's been the problem with a lot of how-tos for Ubuntu. They tell me to do something and it's impossible because the place they tell me to go doesn't exist.