I recently find myself needing to start Steam in offline mode rather frequently (my wife is hogging my account to play Plants Vs. Zombies, and most of what I play doesn't really need to be online).

I was wondering if there is some way to launch Steam in offline mode without first logging in (and selecting it from the menu), since that usually beats the purpose.

While I know that killing my network connection before launching Steam is an option, I am looking for a more "civilized" way, such as a command line switch or something of the sort.