Google Translate Desktop is, basically, as having the famous Google Translate online application in the desktop.
The program allows you to translate from dozens of laguages to any other language: italian, Russian, Spanish, English, Portuguese,...
Although results are not perfect, they are very useful to catch the meaning of a text.
Google Translate Desktop is very useful for people who need something to understand other lanaguages. If you find a text, for example in Russian, and you don't understand anything, you can have an idea if you use this translator.
It works really fast and the translations are good, not perfect but good.