Can''t have comboBox auto select item(that has the starting letter) when a letter is typed....

<ObjectDataProviderx:Key="ItemList"ObjectType="{x:Type src:LookupItemCollection}"/>

<DataTemplatex:Key="ItemDetailTemplate">

<TextBlockText="{Binding Path=Name}"/>

</DataTemplate>

ComboBox works fine, the only problem is that I have to open the comboBox to select an item, my combo box has ton of items in it so it would be really convinient if the box jumped to the item when a letter is typed.

I would really appreciate any help I can get.

Thanks in advance.....