Just got me a StarHub MaxMobile mobile broadband modem. Couldn’t get it to work on my Mac OSX Leopard (10.5.2). The solutions on their website was useless. But i found this useful fix on Apple’s website:

Taken from: http://discussions.apple.com/thread.jspa?messageID=6318313

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After calling Starhub, this is the solution.1. Install the driver from the CD provided, before connecting the USB modem.
2. Edit network preference in “System Preference” > “Network”
2.1 You should see the HUAWEI Mobile at the left sidebar. Click on it and edit setting as follow:
Location: Automatic
Configuration: Default
Telephone Number: *99#
Account Name: (Live it blank)
Password: (Live it blank)
<Enable> Show modem status in menu bar
2.2 Edit the “Advanced…” button as follow:
Modem
Vendor: Other
Model: HUAWEI Mobile Connect - 3G Modem, /System/Library/Modem Scripts/HUAWEI Mobile Connect - 3G
<Enable> Enable error correction and compression in modem
Dial Mode: Wait for dial tone before dialing
Dialing: Tone
Sound: Off
PPP
Setting: Session
Check the following only:
*<Enable>*Disconnect when user logs out
*<Enable>*Redial if busy
Redial 1 times
Wait 5 seconds before redialing
Click Apply and exit system preference
3. Connect the USB modem until the blue light is blinking.
4. Edit the configuration as follow:
4.1 Open “Aplication” > “MobileConnect”
4.1.1 Under the “Dial up” tab, click on the Setting button.
4.1.2 Create a new profile as follow:
Profile Name: “Starhub_Mobile” (Can be any name)
Access Point Name: “shwap”
Telephone Number: *99#
Account Name: (Live it blank)
Password: (Live it blank)
Authentication: CHAP
Click “Save”, and use this profile.
4.2 Click on the connect button and the connection should start.

Tips: Once the Modem is shown on the menu bar, you can click on “Connect HUAWEI Mobile” to connection in future.

And it works! w00t!