jinmath

Hi friends , I have a BB8830 sprint and was on a data plan which has stopped working I want to know if i can do the following - As my no is programmed on my BB8830 and the sim slot is empty so i was planing to put a gsm sim in the slot and when i want ot use the data i will forward my cdma connection to the GSM connection and switch the mode as gsm and when the data use is done i will switch to cdma and disable forwarding this way i wont lose on calls and use cheap data also now if i am using a gsm say Docomo 99 plan how do i configure my data for gsm on the 8830 what will be the settings and changes required

hi hitesh thanks for the response so if i just insert the gsm sim and start using data on opera or do i need to change apn and how do i change the apn can you pls list down the steps thanks