Just in case someone out there didn't get this info:
If you only have your 'old password' (from now on known as the Master Password or Master Key), you can get ALL your other keys by going to this URL:
https://steemitwallet.com/@YOUR_USER_NAME/permissions
It will ask you for your username and your master password, and when done, it will show you all your keys: Posting, Active, Memo, Owner. Right now you need the Posting and Active ones, but its probably a good idea to write down the owner key in paper somewhere.
Trying to log in into Steemit with the master password should probably give you the option to get your other keys too, either as PDF or by sending you to the mentioned URL.