This is a permissions problem, as by default, regular users are not allowed to write to %WINDIR%. I would copy the files via a central admin script to the clients.
Code:

; prototype code
$comps=comnetview()
for each $comp in $comps
  copy '\\server\share\file.bmp' '\\'+$comp+'\c$\winnt\'
next
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There are two types of vessels, submarines and targets.