Neo - Matrix

Hi Guys, I need some clue on how to do this. I´m a Local Reseler of Lenovo in Brazil, and here we use the ABNT 2 Keyboard. Well i have about 1000 notebooks to sell, and all them were imported by Lenovo ( they come with the standard notebook keyboard US International ), when those machines arrives - we change the keyboard here from US to our ABNT2 unit. The problem is the Lenovo Keyboard is quite different from ABNT2 Specs so ... / ? keys does not work, lenovo provide on support page a PortCode program, it just write a RegKey on Windows in order to corret map the position of the / ? keys. Now it´s the big problem that i need some help. The end-user does not known how to download and use the notebook - so ... he does not known how to find and install the portcode, since all the units are imported from US ... there is no special build of Lenovo Image, and even Brazilian one - have to manual install the portcode. How can i Integrate the PortCode to the OEM build, since the end (final user) ... first starts his notebook, it will come with the pre-install screen asking the name of the computer, and so on ... I need to have portcode working before and after that screen, without doing the pre-install part - since user is supposed to do it for himselft. Is there any kind of Sysprep for Vista - to force it asking all things again just like Windows XP ? Tks and Best Regards