Hi,
If you take a look of this file:
C:\[MC installation folder]\TV\DVB Frequencies.xml
you will find that Italy is not in the file. You need to find out what frequencies are being used in Italy and create an entry in that file.
In the following example, bandwidth is either 8 or 7. If only one bandwidth is used in Italy, you do not need to specify it for each individual channel.
<Country Name="Germany" CountryCode="49" NetworkType="DVB-T" Bandwidth="8">
<Channel Freq="177500" Bandwidth="7"/>
<Channel Freq="184500" Bandwidth="7"/>
<Channel Freq="191500" Bandwidth="7"/>
<Channel Freq="198500" Bandwidth="7"/>
<Channel Freq="205500" Bandwidth="7"/>
<Channel Freq="212500" Bandwidth="7"/>
<Channel Freq="219500" Bandwidth="7"/>
<Channel Freq="226500" Bandwidth="7"/>
<Channel Freq="474000"/>
<Channel Freq="482000"/>
<Channel Freq="490000"/>
<Channel Freq="498000"/>
...
</Country>
Many European countries use the same frequencies. If you can not find specific information about TV channels in your country, you can try duplicating the table from a neighboring country.