I have also installed Skype in my Debian Lenny/Syd and it works fine. What's exactly the problem that you have got? Have you tried running alsa-conf from a konsole?
Kind regards.
--
Oscar Blanco García
Ingeniero Electrónico - Universidad Nacional de Colombia
Teléfono: Casa: +57 1 687 0019
Celular: +57 3133890451
Carrera 123B # 131-66 Bloque 55 Apartamento 402
Bogotá, Colombia
