Well , the first time I set up my home network, I was all on my own. I relayed heavly on the wizard (I also wanted to share cable connection), I had nobody to help me, and since I didn't have my Internet connection ready I couldn't really do anything else but experiment. And the countless times I created, and ran from one computer to another with the "Wizard network disk" (one computer was WinXP, one Win98 and then Win2000), and the annoying message that "my network is set up correctly" - just that nothing works. Then I didn't know any better way to check my connection then open up the "My network places" and see if I find only one machine there, or not....
And then it turned out one of my cables was crossover, while I wanted to use a switch. And the fact that my modem had routing disabled (I couldn't plug it directly into the switch), and that I couldn't get it to work via USB (so I thought I'm gonna need 2 network cards for the server), and then it turned out my firewall blocks my network - that really made it a horror.
And then I tried to think logically - define everything manually, use the console - and there you go - perfect network 🙂