I upgraded my MacBook OS to Leopard, and everything worked pretty well until I tried to use my Sprint EVDO card. In Leopard, the "Internet Connect" utility is gone and the functionality has been moved into the regular network preferences. There was a device in the network prefs window, but it said "not connected" and it would not connect.
I tried reading some EVDO forums and apple support forums, and they were all very vague and not helpful.
I ended up randomly trying a bunch of things, and here's what worked for me:
1. remove the novatel USB device.
2. downloaded the latest driver package for Mac OS X from Sprint. It says it is for Tiger (10.4) but it seems to work.
3. I deleted (sudo rm -rf) all the Novatel files from /System/Library/Extentions. Reboot.
4. Run the mpkg installer for the sprint drivers.
5. Reboot.
6. Open network preferences; plug in the Novatel device; click "+" and add "Novatel CDMA" device.
7. Click "Advanced" button. Change vendor to Novatel and Model to CDMA.
8. Click "Connect" and it works.
Note that I had previously activated this device when my MacBook was running Tiger, so I didn't have to do any activation.
