da'dodo > 64 bit refers to a 64 bit processor. It has nothing to do with 'cipher strength'. And if she used the 64 bit version update, she would have several problems.
Summer > Do NOT get the 64 bit one, this refers to a 64 bit processor, which you do not have. Unless you got your hands on that fancy new 'clawhammer' or one of those upped Xeon chips, which in that case, you would be my new friend .
I don't even want to know.btw- Summer is a pretty name