Mac OS X Server 10.6.7: Disable Apache?

Question

I'm doing some Rails dev, and I'm trying to get Pow running. After making the appropriate symlink, if I try to go to idealm_web.dev/ (idealm_web being the name of my Rails project), I get this:

I was told that this was Apache. How do I disable this? I checked under System Preferences > Sharing, and there was no way to disable it.