Original sentence: Built from Microsoft Windows Vista, this version differs from previous versions in that it does not require a source CD as the files are built into the initial installation of the toolkit.Once again, it is possible to modify the bootable image created to contain a variety of plug-ins such as WMI access, Windows Scripting Host (WSH), additional drivers and other 32-bit applications (or 64-bit for the 64-bit version).Other new features include the ability to use a re-writeable RAM disk (WinPE 1
Edited sentence: Built from Microsoft Windows Vista.However, the  command can be used to reduce the size of the  file to approximately 97MB with an internal size of 251MB, enough to run on 256MB of memory.Once again it is possible to modify the bootable image created to contain a variety of plug-ins such as WMI access, Windows Scripting Host (WSH), additional drivers and other 32-bit applications (or 64-bit for the 64-bit version).The best aspects from the new build are the ability to use a re-writeable RAM disk (WinPE 1.The only downside currently is the large minimum memory requirement which now edges closer to 512MB to be on the safe side.The whole process of creating the bootable environment from WinPE 2.0 is made much easier by using Microsoft's Business Desktop Deployment 2007 product (now called Microsoft Deployment), making the whole process free of the command line tools familiar to users of the older systems.This latest version of WinPE differs in that it no longer requires a source CD as the files are built into the initial installation of the toolkit