A) This script requires administrative privileges to be successful
B) Why don't you use a admin script performing remote egistry edits to distribute the changes along the line sof
Code:

$comps=comnetview()
for each $comp in $comps
  if not keyexist('\\'+$comp+'\HKLM\SOFTWARE...'
    $rc=writevalue()
  endif
next

Also, ADDKEY is normally unnecessary as WRITEVALUE will add the keys as well if missing.
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