When upgrading to OS X Lion, the Telstra Mobile Broadband Manager no longed sees the 3G USB Modem (ZTE USB Modem).

Using the Tools | Check for Updates options reports there are no later versions.

To configure modem to connect without using the Telstra Mobile Broadband Manager:

- Plug in the Wireless Broadband Modem
- Click on the Wi-Fi icon on the menu bar and select Open Network Preferences
- Select ZTEUSBModem in the left pane
- Enter the Telephone Number of *99#
- Check Show modem status in menu bar
- Click Connect

Alternatively download the latest version (currently 3.3.10222) which works with OS X Lion:

http://www.telstra.com.au/bigpond-internet/download/document/bigpond-connection-manager-mac.dmg