Click on choose other refund options and continue through the refund and payment screens. Eventually, after showing you that you qualify to pay for your fees with your refund, it will ask if you want to use the old Direct Deposit and you choose NO, then enter then new information.
Yes, in the FILE section, after you have paid for TurboTax Online, you'll be asked how you want to receive your refund. You can choose the same bank as last year, or use a different bank.