The Eurovision is an European song contest very popular in Ukraine and in Russia.
In Italy, in the opposite is not so popular as in the other European countries. Italian singers very seldom participate in this contest.
How to watch Eurovision in Italy
You can follow it live on the official website of Eurovision:
http://www.eurovision.tv/esctv
You can find it also on Hotbird (Sat TV), for example on “TV POLONIA” and “EinsFestival”.
Sadly as far as i know it is not available on the few Russian channels of hotbird. 
The dates (Eurovision Oslo 2010)
First semi-final: May 25th
Second semi-final: May 27th
Final: May 29th
For to know more
The history of Eurovision
http://en.wikipedia.org/wiki/Eurovision_Song_Contest
