I have got this working on Vodafone India with Vista.
I called the BB division of Vodafone suuport and got them to give me the settings.
number to dial is *99#.
I deleted the same from my laptop, as I did not need to use it anymore. I will try and get the initialisation string from vodafone again and post it here later this week.
Now - Bold 9700 & Pearl 8110 on Vodafone India
Earlier used models - 8520, 8820, 9500, 9000, 8800