Some of the VAS vendors which my company is doing business are,
1 - EarthFactor.
2 - ZRG.
3 - Vectracomm
4 - UAEMobile
5 - Kirusa
6 - AKN
7 - Planet beyond
8 - Rockville
9 - Sybase
10 - Converge
and like 40 more.tell me what exactly u require.I might be able to help you out in this regard.