A complete chart listing necessary workstation elements is available
here
What is the difference between Windows XP Professional and Windows XP Embedded?
Microsoft Windows XP Embedded is a componentized version of the Microsoft Windows XP Professional operating system. The major difference between them is that Windows XP Embedded is engineered specifically to support embedded devices and their manufacturers. More information about their differences is found in this
White Paper.
How do I update Windows XP Embedded device images?
Windows XP Embedded makes it easier for enterprises and OEMs to verify that operating system files are always up-to-date. The operating system supports: