Looking to buy a used X5, question on how to tell what options they have?

[jrcmlc]

We previously had a 2002 X5 many years ago, and loved it, but we traded it on something new. Now, my wife has decided that for our "beater" to carry dogs and groceries, that she'd like me to pick up a used 2003ish X5 3.0.

My question: I see MANY of these for sale at used car dealers, that are on the 2nd and 3rd resale, and nobody seems to be sure what options they have.

Is there a quick and/or easy way to tell what options they came with, without having the original window sticker? A vin lookup for all options, of sorts? Or, as with other vehicles, is there a "code sheet" someplace (I don't recall seeing one before) that lists all options the vehicle has?

Thanks,

Joe