http://codex.simple-press.com/codex/installation/installation-information/localization/

I’m logged into localisation web site (http://glotpress.simple-press.com), but I can’t find where download italian language file.

Can you help me?

which part? there is core, admin, themes and plugins… but it does not look like anyone has completed an Italian translation yet… nor has anyone volunteered to be a Italian language validator yet…

Ok! Suppore that I’m looking for a language that is disponible…. how Can I download in this area: glotpress.simple-press.com for install on forum??

Thanks 

until someone volunteers to actually translate and validate the Italian language, there is not one available for download…

try an Italian translation (machine):

fino a quando qualcuno si offrirà volontario per tradurre in realtà e convalidare la lingua italiana, non è disponibile per il download uno …