desktop properties

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From: sjm (anonymous_at_discussions.microsoft.com)
Date: 05/25/04 

Date: Mon, 24 May 2004 18:21:02 -0700

When I right click on my desktop, and select properties, all I get is a "display theme " box. I dont get any of the tabs , such as desktop, screensaver ,advanced,etc., my os is xp. any help??? thanks....