Quite complicated network situation trying to make Bonjour work

Question

Hi so I have a little problem that I would liek to solve. First off I would like to try to explain my network setup.
So I have a modem/router making it's own WiFi network in the house. My MacBook Pro is connected to it. Then my MacBook is connected using Ethernet to an AirPort Express, with Internet sharing activated. That AirPort Express is emiting it's own WiFi network with a different SSID. Then my iPhone is connected to that second network. Yes it might seem crazy but the reason I do this is that I kinda broke my iPhone's wifi antena so it doesn't get enough signal from the first network. And this way I save on cellular data and everyone will agree that it is more comfortable to use an iPhone with an Internet bandwith of 11Mb/s rather than around 2.5 in 3G and 0.5 in EDGE, or 0.1 in GPRS. Yeah. So Basically this is the setup:
Modem/Router < - - - - - -  > MacBook Pro <-------> Airport Expresss <- - - - - > iPhone
My problem is that the Bonjour network service (iTunes sharing/ AirPlay/ Remote) is not going thourgh my AirPort Express. I think because the Network SSID is different or maybe it has to do with the subnet mask.
Here are some infos about the IP adresses :
iPhone :
IP: 192.168.10.2
Subnet Mask: 255.255.255.0
Router : 192.168.10.1
DNS : 192.168.1.1
AirPort Express:
WiFi :
IP : 192.168.2.9
Subnet Mask : 255.255.255.0
Router : 192.168.2.1
DNS : 192.168.2.1
MacBook Pro : Ethernet :
IP : 169.254.50.21
Subnet Mask : 255.255.0.0
WiFi
IP : 192.168.1.53
Subnet : 255.255.255.0
Router : 192.168.1.1
DNS : 192.168.1.1
So if someone has an idea to make this work better, either making Bonjour work or having a different setup for my iPhone I would love some help.
Thanks !

Answer 1

There is a misunderstanding, I think.
your modem and router are together.
At a distance there sit your MB, receiving the wifi signal. At the same spot I want the Airport Express as an extender, so that your iPhone near it can connect to the Airport Express. The MB can then receive both signals and you choose the strongest one.
This network then acts as one single WiFi network, so that everything works as if there is only one sender, the router, same SSID and bonjour works also. This is method 1 I proposed. Read the post with method 1 again.
Step by step:
1. Disconnect ethernet cables.
2. Place the Airport Express in reach of the Router (what Router do you have, Name, Model, spec a/b/g/n?), say 10 meters.
3. Place your MB next to the Airport Express.
4. Start the AE, and in your MB, start Airport Utility, you will see the AE, go to manual setup: on Tab "wireless" set "extend a wireless network", put in the name your Wireless network has on the Router, check "allow wireless clients", choose the same "Wireless Security" as you have on the Router, and if you have a passord for the wireless network set it; go to Tab "base Station" put in any name you want for the AE (different from the Router name, so that you can discern between them), put in the same password as on the wireless tab, check "remember this password in my keychain", uncheck "Allow setup ...Bonjour".
Note: If you are having difficulty connecting to the AE with your MB to do these settings of the AE, connect yor MB to the AE with the ethernet cable.
5. Unplug the ethernet cable between the MB and the AE (if used).
6. Unplug the AE, put it back to the place where you want to have it (in reach of the signal from the Router), plug it in the wall socket, wait until the light is green, then check with your MB Airport (top menu bar), you should see a strong signal. Start the Airport Utility again, you should see the AE.
7. Connect your iPhone while close to the AE.
Now you have one network and Bonjour should work normally.