ok ich hab noch was wenn avi dateien nicht mehr gelöscht werden können vielleicht hilft das auch, einfach in ne .inf schrieben, dann rechtsklick un installieren:
; Windows XP explorer movie fix.
;
; WARNING - Use this file at your own risk.
;
; Executing this file will remove a registry key which makes explorer load shmedia.dll.
; Simply put, this removes the annoying "permission denied" errors when trying to
; move/copy/delete AVI files.
;
; To use this fix, right-click on the file and select install. Done.
;
; Information about the registry key from multiple sources.
; Inf-file compiled by Moo (2002-03-22).
; Idea by Duxus. Thanks to the kind people of "[BBB] Sweden #01", you know who you are!
;
[version]
signature="$Windows NT$"
[DefaultInstall]
DelReg = Reduce.Reg
[Reduce.Reg]
HKLM, "SOFTWARE\Classes\CLSID\{87D62D94-71B3-4b9a-9489-5FE6850DC73E}\InProcServer32"