Depending on what you are doing, you could: 1) Customize the navigation control provided in the toolkit. In Blend: [INDENT]- insert the navigation control[/INDENT] [INDENT]- right click on it[/INDENT] [INDENT]- choose 'Edit Template' and then 'Edit a copy'[/INDENT] [INDENT]- change the look as you need.[/INDENT]
2) Programmatically in C# use the ZoomTo method on the map.