The OP would not only need updates. She would also need the California state program. By 2004 state updates were being distributed as downloads within the TurboTax software. I'm sure those state downloads are no longer available.
For 2004 and several years before that, update CDs were available on request. I don't know about 2005 and later.
Even if updated software for the years in question could somehow be obtained, it might not run in any current version of Windows.
The bottom line is that usable federal and state TurboTax software for 2004, 2005, and 2006 is simply not available.
