Jens,

OSID() now seems to work pretty good.

Only thing I ran into was this, but I guess it is correct since my system was not built in that manner.

This key does not exist in my Registry
$os_oem=readvalue('HKEY_LOCAL_MACHINE\System\Setup','OemDuplicatorString')

Where did you find/learn about this string?

Microsoft, and major search engines don't show it.