procedure for banking job after bcom

im in second year bcom now.i want to write banking exam so that i can join a bank just after bcom and then do correspondence higher studies to get a better position.is this a good idea?which exams should i write?what should be my score in bcom to …

im in second year bcom now.i want to write banking exam so that i can join a bank just after bcom and then do correspondence higher studies to get a better position.is this a good idea?which exams should i write?what should be my score in bcom to feel secure?please tell the procedure.

please give your opinion about all the above asked questions.dont give a link to another site where i will have to start searching all over again.to make it easier for you let me list out the things i want to know:

1.should i write banking exam before i finish bcom?

2.which exam shold i write?

3.what should be my score in bcom to feel secure with that part.

4.if i pass this exam, what should i do next to join a bank.

PLEASE HAVE PATIENCE AND ANSWER HOW MUCH YOU KNOW!THANK YOU!!