changing section numbers

[Rolando Abarca]

I want to change the size, font face and perhaps the style of the 
numbers of each section. How should I do this?
I'm using a copy of the doc setup file to change other things, but I 
couldn't find the section numbers... where is it?

regards,
Rolando Abarca.-
Departamento de Ciencias de la Computacion
Facultad de Ciencias Fisicas y Matematicas
Universidad de Chile