Dynamically Creating Controls Following MVVM patte

I'd like to dynamically generate some controls in my silverlight application.
To be more clear, here's a simplified definition of my class:

public class TestClass
{
    [Display(Name="First Name")]
    public string FirstName { get; set; }

    [Display(Name = "Last Name")]
    public string LastName { get; set; }

    public List<CustomProperty> CustomProperties { get; set; }
}

Each "CustomProperty" will finally be a TextBox, CheckBox or ComboBox:

public class CustomProperty
{
    public CustomDataType DataType { get; set; } //enum:integer, string, datetime, etc
    public object Value { get; set; }
    public string DisplayName { get; set; }
    public string Mappings { get; set; } // Simulating enums' behavior.
}

What is the best way to implement this using MVVM pattern? If I parse CustomProperties in ViewModel, and find out which controls should be created, How can I create new controls in my view based on MVVM pattern.
Is there any silverlight control that can help me make the UI faster?
Can I define data annotations programmatically? for example after parsing the custom property, can I add some data annotations (Display, Validation) to the property and bind it to a DataForm, PropertyGrid or a useful control for this situation?

Thank you.

In these cases you usualy use one of the controls inheriting from ItemsControl (e.g. ListBox) or the ItemsControl directly. The controls inheriting from ItemsControl allow you to define a template for each item in a collection, e.g. using your sample (assuming you got access to your TestClass through a view model):

<ListBox ItemsSource="{Binding TestClass.CustomProperties }">
    <ListBox.ItemContainerStyle>
        <Style TargetType="ListBoxItem">
            <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
        </Style>
    </ListBox.ItemContainerStyle>
    <ListBox.ItemTemplate>
        <DataTemplate>
            <!--DataContext is stet to item in the ItemsSource (of type CustomProperty)-->
            <StackPanel>
                <TextBlock Text="{Binding DisplayName}"/>
                <TextBox Text="{Binding Value}"/>
            </StackPanel>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

This snippet creates a ListBox that contains a label and a text box for each CustonProperty in your CustomProperties collection.