Windows Vista Black Edition 2011 | 2.27 Gb
The Windows Vista Black Edition is a modified Vista distribution that is optimized for Gaming. Vista Black is a hack. It still installs and authenticates with WGA just like Vista Ultimate but you need to own your own key code for it.

I forsee you having problems. It is not a valid, legal retail boxed version. There is NO reason to install this on a corporate network. The Windows Vista Business Edition is what you are looking for.
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