Dear netters, We are dealing with a semiempirical model of diamond deposition onto a silicon substrate and we have some dificulties to found a suitable value for the binding energy between carbon and silicon atoms at the surface of the substrate. Any reference about this subject will be very welcome. Best wishes, Claudio Perottoni Universidade Federal do Rio Grande do Sul Instituto de Fisica Porto Alegre - BRAZIL e-mail: PEROTT(-(at)-)IF.UFRGS.BR