I have been getting my notebook ready and secure for going mobile.
Step 1, to physically protect the notebook get a notebook combination cable lock.
Step 2, to protect the notebook contents, activate a power-on passphrase.
This article from a Microsoft Security employee (via Rob Hyndman) strongly argues that a passphrase (requiring more characters than a normal password) is more effective than a password. Other articles argue that passwords are past their prime.
If I’m going wireless, there are other things I need to do. More on that another time.