Hi Shan Lakshmanan,
Everything worked fine on my side - I used the Web_UI project, attached to this thread, updated to the latest version of RadMenu - v2008.1.515 and set the Sunset
skin to the control.
I suppose your case is more complex and there is something else preventing the style from applying.
P.S. "rmFocused" is the right name of the class which RadMenu uses to indicate that an Item is focused.
the Telerik team