While viewing the odo (not trip. And I didn't have to reset my trip, either) turn your key on-off, on-off, on-off, on within 5 seconds.. You will need to hold the key release button to get the full on-off sequence. Also, make sure you turn the key untill the acc come on each time. I just did this 2 days ago on my '97SE. Also, my FSM doesn't say there is any difference between '97 models for this procedure.
Nevermind, just noticed the original post was from Aug last year.