ReactOS support

[MagicalDrizzle]

since there already is an XP version, I'd imagine ReactOS (which is server 2003 build 5790 as far as this is concerned) shouldn't be too hard?
I have tried to replace the hardcoded build number with 5790 (and remove the /c parameter on the findstr line because it seems reactos's version doesn't work with it
and after that it installs fine, just have to copy the winsxs folder from windows to reactos (is that hardcoded too?)

[abbodi1406]

Thanks for testing, i will add Server 2003 support (and create x64 AIO for it too)

content of winsxs folder should be installed by VC++ 2005/2008 msi, if ReactOS support that