As you probably know, my family and I are in Mexico for a few weeks. Because we’re here for close to a month, I’m working full-time for part of our trip while my wife and kids enjoy the goodness that is the all-inclusive Sandos Playacar (we’ll be moving in a villa for the last 2 weeks on the 24th). This lead me to acquire a TelCel Amigo 3G USB stick (comes with 3GB of monthly bandwidth).

Since this is the only constant internet connection we’ll have throughout our stay, I wanted to be able to share the connection so that I can also connect via wifi for our iPhones (unlocked, also set with simple pay-as-you-go local SIMs, but no data) and my son’s netbook.

If you happen to be on OSX, doing so is absolutely dead-easy.

1. Connect to the internet via your 3G connection
2. Make sure Airport (wifi) is on
3. Go to Systems Preferences → Sharing
4. Select Internet Sharing
5. Select your USB stick’s hardware from the list of ports in the “Share your connection from” section (see screenshot below)
6. Check the “Airport” checkbox
7. Set a network name and WEP password using the “Airport Options…” button

Tada! You should be all set and now be able to see your mac-as-an-access-point from any wifi-compatible devices. Enjoy! :)

Update: Had forgotten to attach the screenshot I mentioned. See below.