how do i connect to xbox live using wireless modem?

If you just need to connect your xbox to your WiFi gateway/router, you can follow the steps here:

support.xbox.com/.../first-time-connection-solution

Alternatively if you are getting an message when you load up the game, it could be referring to the fact you need an Xbox Live subscription to play the game.

How do you connect to Xbox live ? Wired or wireless , what kind of modem and router ?

You have a built in wireless system in the Xbox 360 Slim. What you need is a modem and router (prefer wireless since you already have WLAN on your Xbox 360) Install your router device and connect that to modem. On your Xbox 360, search for your router, here's
a guide on how to do that
support.xbox.com/.../cant-connect-to-xbox-live-wizard

Which problem do you encounter?

If you want to connect your Xbox wired
here's a tutorial how do to it.

If you prefer to go wireless,
here's a tutorial to set up a wireless connection for your Xbox.



Note: if you have a Xbox S-Console, wifi is already built in.

The only thing you need to do is to ensure that your Modem is connected to the internet.

Then setup your wireless network:

Xbox Home - Settings - System Network Settings - Wireless Network - Choose your network - Enter password - Wait for the connection to be completed.

Hi, are you connecting to one of the Thomson gateway 4 port modem/routers???

If so, the easiest way to fix your connection issue is to turn the modem off for between 30 seconds and a minute and then turning it back on. I use Telstra for my internet connection and that is how I manage to get my xbox to connect to xbox live via the
wireless network.