with both aacomas and amcas..you do not send your lor's there..u send lor's to individual schools. Different schools have different policies with lor's for re-applicants. Some schools require to submit entirely new lor's, some may require only one new lor, and then some let you use the same lor's as last year b/c they kept them on file. I'd say for the most part, you will have to re-submit lor's..whether you need add a new lor is up to individual schools.