Mac OS X XBMC Config network to remote control by Iphone

I'm using MAC OS X Lion 10.7.3 .My iphone 4s was installed XBMC Remote .but i can't discovery host XBMC on my MAC.I was downloaded XBMC ver 11.0 eden on the xbmc website . But i ca'nt config network to remote by iphone. In the System \ Network don't have item Server to config Web server like the user guide on youtube XBMC remot Zeroconf Setup.
Please show me the way to config remote on XBMC's MAC OS X.
Thanks

It's the HTTP option you need to select.

In the Setting only show Service + Internet Access Tab.
In Service \ Internet Access I select enable to all service: Share video + Allow control of xbmc via UPnp + Allow control via HTTP , I set User and Pass + port 8080.
+ Web interface is default
+Allow programs on this system to control XBMC
+Allow pro on other system control XBMCAnnounce these services to other system via zeroconf

In the System\ Input devices Tab i select enable
+ Remote control send keyboard
+ Enable Mouse and touch screen support
That's all . Don't have other option in this Eden XBMC 11.0 Ver

Is the iPhone connected to the same wifi network as the Mac OS box? It won't work over 3G (not without port forwarding and some other tricks, IIRC).

Yes . Iphone connected to the same wifi network .
In my iphone , can't discovery host.
in other case , I set manual Host with exactly IP address of Host Mac OS , but can't connect , report you must enable web server or zeroconf.

Do you have firewall settings enabled on the Mac? (under System Preferences -> Security)

I disable Firewall , not enable security .