  A great effort is being made by the international Virtual Observatory
community to build tools ready to be used by scientists. Presently, providing
access to theoretical spectra in general, and synthetic spectra of galaxies in
particular, is a matter of current interest in the Virtual Observatory. Several
ways of accessing such spectra are available. We present two of them for
accessing PEGASE.HR evolutionary synthesis models: HTTP-access to a limited
number of parameters using Simple Spectral Access Protocol (SSAP), and
full-featured WEB-service based access using Common Execution Architecture
(CEA).
