Nokia 6300
Data through bluetooth transfer not going to memory card automatically

Sir/madam, the data that i try to receive from other mobile phone via bluetooth does not go to my memory card rather it goes to the phone memory and sometimes when the data is more than say about 5mb the opration fails.kindly let me know as to how i may be able to receive this data. i have nokia 6300 handset with 1gb memory card.