http://www.CS.UniBO.It/~gonano/RoLUG/volagra.pdf http://www.CS.UniBO.It/~gonano/RoLUG/lettinv.pdf Adieu, -- Lestat de Lioncourt -- a.k.a -- Ciro Mattia Gonano Undergraduate student in Computer Science at University of Bologna IHGGer #1049 <=> ICQ#: 52631406 <=> URL: http://www.CS.UniBO.It/~gonano Debian admin at Students.CS.UniBO.It <=> look at headers for my JabberID & GPG