or, use an array of folders for your "Dont scan" list.

Code:

$dontscan = "Program Files","C:\windows","c:\winnt"
$dirs=DirPlus("C:\","/ad")

for each $dir in $dirs
  if ascan($dontscan) = -1
    ;the current folder is not in the dont scan list.

    $Files=DirPlus($dir.path,"/S /a-d")
    for each $file in $files
      ;do stuff
    next
  endif
next