I Found a Solution to this problem on smallbizserver.net. Many thanks Wes Stuckey.
http://www.smallbizserver.net/Forums/tabid/53/view/topic/postid/17012/Default.aspx My own modification to Wes solution was to boot using UBCD4WIN and pressing F6 at boot to install DELL Perc drivers as UBCD did not appear to have them. My installation did not have the userdiff file in the repair folder.
Now to fix the original DCOM problems!!