You have to enter a bank routing number and account number in order to get a direct deposit of your refund. If you do not enter those numbers, the IRS will mail a check to the address on your tax return instead of making a direct deposit.
As for when you will receive your refund---you have another thread with a comprehensive reply about that, so read that reply. Going forward, please keep your related questions in the same thread so it does not become confusing for those of us who are trying to to help you.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**