Here you go then. Instructions as per one of Edward’s older posts.
CAUTION! This is a potentially dangerous process that can mess up Vegas. If you mess up, you’ll have to restart Vegas holding down the SHIFT key to reset all settings. So… proceed at your own risk:
Hold the SHIFT KEY and go to Options – Preferences and there will be a new tab marked “Internal.” Search for the word “Dock” in the word field.
Change this to TRUE.
Close the preferences screen and your timeline will now be on the bottom of the screen.