(Data Connectivity only)
I have done it on Tata Indicom network and have a Macbook Pro. It should also work well on a Macbook.
Your SIM card must be pre-activated on windows or a CDMA phone. (Important update.. Feb 2009. Recently Tata Indicom has asked its customer to upgrade the SIM card. Please take your SIM card to a Tata Indicom outlet and ask them to insert it in a Tata Mobile and dial *228 from it. Follow the instructions that you hear on that call)
Boot your Mac
Insert Sungil SXC – 1080 in the USB port
Open System Preferences
Click on Network

A dialog box will open up. Click OK!

Go to Location.
Choose Edit Locations..

Say Sungil SXC - 1080 USB CDMA
Hit Done

On the left Menu, select Qualcomm CDMA Technologies MSM
Choose Configuration: Add Configuration

Create a new Configuration called: Say Tata Indicom CDMA
Hit Create

Enter the following:
Telephone Number: #777
Account Name: internet
Password: internet
Check on “Check modem status in menu bar
Click on Advanced

Select Modem: (Verizon is my personal favorite)
Vendor: Other
Model: Verizon Support (PC 5220)
Dial Mode: Ignore dial tone while dialing
Go to PPP
The following options have been also tested to be working good in order of my personal preference:
Vendor: Sierra
Model: CDMA
Vendor: Franklin
Model: CDMA
Vendor: Sprint
Model: PCS Version
Vendor: Novatel
Model: CDMA
Vendor: au by KDDI
Model: cdmaOne Bluetooth
Vendor: I-O DATA
Model: USB/2-xxADP
Vendor: NTT DoCoMo
Model: P/FxxxiX
Vendor: Supra
Model: SupraExpress V.90 USB
Vendor: WILLCOM
Model: AH-J3003S (USB)
Vendor: SoftBank
Model: C01SI (PC Card)

Uncheck all options under sessions, except Disconnect when user logs out


Hit Apply, and hit CONNECT...

Enjoy !!!.

Feel free to drop me a line on trueimages@gmail.com if you still have problems and I shall try to respond as soon as I can. The formula given above is for use of Mac Community, and should work well.
This is only a goodwill effort for the Mac Community and I bear no responsibility if this does not work for any reason.
Cheers
Amit Bhargava