Letter to bank manager?

I work in a supermarket and after 7 long years as a checkout operator, i fancy a chnage, going into banking. how can i write out a letter to the bank bloke ger, asking if any possible vacancies are avaiable? is it right my name and address goes on the right hand side and the bank address goes on the left hand side? how shall i write out the main body?
Answer
all banks recruit temporary staff through agencies and then take the cream of the crop onto contracts, then make them permanent. canvass the agencies first.