With the RadTabStrip, tabs can be placed on any side of the control and displayed at any angle. This example demonstrates the RadTabStrip alignment functionality - tabItem1 and tabItem3 are left aligned while tabItem2 and  tabItem4 are right aligned. You can control this behavior by the Alignment property in VS2005 or you may do this programmatically in the following way:

     tabItem1.Alignment = ContentAlignment.TopLeft;

or

     tabItem1.Alignment = ContentAlignment.TopRight;