XP - Vista Downgrading

Been trying to downgrade vista xp.  Client requires it.   Going to try out the following thread from MS.  Notice the timeframe for an expert to respond on this one! 

"David8987604 - 

Posted on Monday, April 02, 2007 6:31:37 PM

I have a new IBM X60 notebook with 80GB SATA HD which comes with Vista BE. How could i downgrade it to XP Prof. as the IBM doesn't come with any restore CD. I have the media & installation ID on the XP Prof. 

Thanks"

Month and a half later: 

Carey FrischMVP - 

Posted on Thursday, March 13, 2008 12:02:47 PM

Installing Windows XP on a computer that currently is running any edition of Windows Vista requires a "clean install".  This is accomplished by booting form the Windows XP CD, deleting the hard drive partition containing the Windows Vista installation, then creating a new partition and formatting the partition NTFS.  Detailed instructions can be viewed here:

 

How to Perform a Clean Install of Windows XP:

http://www.michaelstevenstech.com/cleanxpinstall.html

 

After your clean install of Windows XP is accomplished, please visit the Windows Update web site to download all the latest updates for Windows XP."