This script will look in every profile - you must have sufficient privilege of course:
 Code:
$sPrefix="Q:\Documents and Settings\"
$sSuffix="\documentum\viewed"

$sEntry=Dir($sPrefix+"*")
While Not @ERROR
	If Exist($sPrefix+$sEntry+$sSuffix)
		"Match found for user "+$sEntry+@CRLF
		; *** DO YOUR DELETE HERE ***
	EndIf
	$sEntry=Dir()
Loop


Just add your own DEL code when you are happy that it works.