Thanks Tom, but there is a link "Licenses & Registration" that redirect me on.... https://custcentral.tarantella.com/login.php !!!!
Anyway I know that I can upgrade downloading SSGD 4.2 and then running "rpm -i --nodeps --force tta_4.20_959.i386.rpm". Later on, after the installation, executing the command /opt/tarantella/bin/tarantella/start the licences come automatically dawned and come removed the licences of maintenance.
for renew licence, it is necessary to send one mail to the following address:
ssgd-license-maintenance@sun.com
That's it!
Hi Max