Show "pop up window" when is mouser over listBox item - wpf

Question

I bind observable collection on listBox. I have data tempate on listbox item. It consit one image control and som textBlock.
If is mouse over on some listBox item I would like achieve this behavior:
Show PopUp/ToolTip (some "rectangle" with controls) and bind values from listBox current item.
And on textBox in item data template I have style, I would like change color of text in textBlock, for example from black to green.
Style is here:
<Style x:Key="FriedNickStyle" TargetType="TextBlock">
<Setter Property="Margin" Value="2,2,2,2"/>
<Setter Property="FontSize" Value="13"/>
<Setter Property="FontWeight" Value="Medium"/>
<Setter Property="Foreground" Value="Black"/>
</Style>
Sory for my english, I have problem how describe this behavior correct. I try many thing but any of them doesn’t work good.
Here is it my style:
<DataTemplate x:Key="FriendListBoxItemTemplate">
<Grid Name="RootLayout">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.3*"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="60"></RowDefinition>
</Grid.RowDefinitions>
<Image Margin="4,4,4,2" Grid.Column="0">
<Image.Source >
<MultiBinding Converter="{StaticResource avatarConverter}">
<Binding Path="ProfilePhoto"></Binding>
<Binding Path="StatusInfo.IsLogged"></Binding>
</MultiBinding>
</Image.Source>
</Image>
<Grid Grid.Column="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<TextBlock
Text="{Binding Path=Nick}"
Style="{StaticResource FriedNickStyle}"
Grid.Column="0" Grid.Row="0">
</TextBlock>
</Grid>
</Grid>
<DataTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<!--SHOW SOME POP UP WINDOW and bind properties from ITEM (VALUE)-->
<!--Change color of textBlock-->
</Trigger>
</DataTemplate.Triggers>
</DataTemplate>
Thank everybody who help me.

Answer 1

Well, I found this turorial, this article, by the MSDN and another stack overflow's question.
Basically, here's how:
<Popup Margin="10,10,0,13"
Name="Popup1"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Width="194"
Height="200"
IsOpen="True"> // change this to open it
<TextBlock Name="McTextBlock" Background="LightBlue" >
This is popup text
</TextBlock>