Keep two separate databases (for your Banking passwords and one for your personal passwords).
You can then use use the Windows home sharing feature (in Win7) and share the .kdbx file for your banking passwords with a certain computer at home.
I would usually use a separate (specially created) email account where I would upload my personal .kdbx file as a backup. You can use this method to share your Bank passwords database with a person who knows the username and password for the email service where you uploaded the .kdbx.