4 macs in network on wifi sharing

Hello
I have 3 imacs Alu under up to date Leopard and 1 MacBook Pro under up to date Leopard also. Recent machines of lan. I need in my studio which they communicate between for the file-sharings of printers, of music, etc…
3 machines can be connected to 1 mac and not the reverse, i.e. Mac on which one connects oneself, him, cannot be connected…
I very tested in vein several times, checked 10 times all the parameters and follow-up the councils of Ci,… without success…
HELP!!!
Thank you in advance!

What I do not understand, it is how you carried out your addressing. You do it manually? You do not have a router and thus of waiter DHCP it is that? All is an access point connected together through?

try this that can be helpful to you http://forums.techarena.in/networkin...ty/1124824.htm

Here's how to use your Mac to share your internet connection with your DS:

1. Make sure you're connected to the internet via something other than the AirPort card (i.e. Ethernet).

2. Turn on Internet Sharing:
* Go to System Preferences, click on the Sharing icon, then click on the Internet tab.
* Change the Share your connection from: pop-up to 'Built-in Ethernet.'
* Under the To computers using section, check the AirPort box.
* Click Airport options...
o Enter an easy name such as nds. Leave all the security options blank -- implementing security is an exercise left to the reader -- then click OK.
* Click Start in the Internet Sharing panel.
For sharing internet access with other computers, this is usually sufficient. However, the DS doesn't play well with the built-in DHCP server, so we have to manually configure the DS. To do this we, must gather some info...

3. Gather Information:
* Open Terminal.app and type ifconfig en1. In the output...
o Look for: inet xxx.xxx.xxx.xxx netmask ...
o Take note the IP Address (the x's) associated with the first inet (mine was 10.0.2.1; yours may be different).
* Type dig. Near the bottom of this output will be SERVER: followed by an IP address. This will be the DNS server you will use for your DS.

4. Configure the DS:
* Edit your Nintendo Wi-Fi Connection Settings from within a compatible game.
* Select a connection to edit.
* Choose Manual Setup.
* Enter the following parameters:
o SSID: nds (or whatever you chose in step one)
o Auto-obtain IP Address: No
o IP Address: Take the first IP Address you obtained earlier, and make the last digit bigger. i.e., mine could be 10.0.2.4
o Subnet mask: 255.255.255.0
o Gateway: The first IP Address, unchanged. (e.g. 10.0.2.1)
o Auto-obtain DNS: No
o Primary DNS: your DNS SERVER from the earlier dig output.
* Test your connection at the top of the screen. You should have no problem connecting.

That's it, now just have fun!