> I would like to know an user who sends by e-mail the demo
> file of Macsyma 2.4 (30-40 Mb) to me , because I can't get
> it in Spain.
This mailing list is for Maxima. Maxima is a brother of Macsyma 2.4:
both are descended directly from the 1982 version of Macsyma from M.I.T.
Macsyma 2.4 was a commercial product, but has not been available for
several years now and is no longer supported. Maxima is available for
free download from http://maxima.sourceforge.net. Maxima has been used
effectively by researchers, teachers, and students worldwide and there
is an active community of users who offer advice and support.
-s
PS It is unlikely that a 30 Mb file could successfully be sent by email.
PPS If you really want the Macsyma 2.4 demo for some reason, you might
try asking on the sci.math.symbolic newsgroup. I have no idea what the
limitations and conditions are on the demo version (requires license key
etc.).