I got my first laptop few months ago — a Dell Inspiron N5030. One of the few things missing in this laptop is the Pause/Break key. Actually, it appears to be missing from all Dell laptops I know of. By accident, I just discovered that the key combination Fn + F6 functions acts as the Pause/Break key!
To see if it works in Windows, press Win + Fn + F6; this should open System Properties dialog.