it would actually be:
$ver=getfileversion("%windir%\system32\shell32.dll")
if not len($ver)
$ver=getfileversion("%windir%\system\shell32.dll")
endif
if not ($ver="4.71" or $ver="5.00") exit 1 endif

but it slows down too much.
I see no reason... other than those ppl who doesn't keep their system up to date.
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