We have previously studied proteins with IINS, as well as their building blocks (20 different amino acids). The latter studies of amino acids yielded sharp vibrational peaks which could be interpreted with ab-initio calculations (aClimax) to generate simulated spectra that almost exactly reproduced the experimental ones. However IINS of proteins yielded broad peaks that could not be reproduced by a simple summation of the amino acid spectra. Hence broadening in proteins is due to the varying environments experienced by the amino acids within the 3D structure of the protein. The structural information contained within the IINS spectra for proteins could be exploited. In this proposal we aim to approach this goal by extending the earlier work on amino acids to a peptide of limited length (~15 amino acids).