I had to help them find the extended warrany bulletin because they had not heard about. Unfortunately, my 99' sienna was placed in service in 02/1999 so i'm late by about 5 months! Looks like i'm going to have to pay for this one out of my pocket. Quote so far from Toyota is $3500, another reputable transmission shop quoted me $2k. The Toyota service guy is checking to see what "breaks" they can give me to lower the price.
In doing my research I also found that Honday Odyssey's of similar years had transmission problems as well. So much for choosing a Toyota or Honda for the sake of reliability !!!