[troyb]

You could also use a workspace snapshot to acomplish this to a certain extent.

1.) Close all browser windows except for one with your startup page.
2.) Position it in the desired spot on your desktop.
3.) Open the tab drawer.
4.) Now select "Take Snapshot" from the Workspace menu.

You'll have a window open with the tab drawer on launch now. New windows will still open up with the tab drawer closed though.