hi everybody,i have a sprint blackberry 8530 (cdma) from USA and i want to use it for another cdma network provider here in my country when i switch my blackberry on it shows activation is required.i need your help what am i supposed to do

You likely will not be able to get rid of the "Activation Required" message because that requires an MSL code that Sprint will not give you.

On what carrier in what country are you trying to use the device?
Do they accept devices from other carriers to be activated on their network?

Few CDMA carriers will activate a handset that was originally sold by another carrier. There is no technology barrier to using it, but there is a "gentleman's agreement" among them not to do this.

At least with Verizon devices, some folks have been able to fix this by dialing ##000000 (Send). In the Menu add your phone number and select save. I have no idea if this will do it for you but it's worth a shot.