Changing Vista users folder

[n3x]

I want to change the users folder location doing install using an autounattend.xml file on a usb memorystick. I have found the code i need to do so in this forum. I do not wish to change anything else doing the install. Now my question is, do i need to put anything else into the autounattend.xml file for this to work then this:

<settings pass="oobeSystem">
	<FolderLocations>
		<ProfilesDirectory>D:\UserData</ProfilesDirectory>
	</FolderLocations>

this is all thats in my autounattend.xml, will this work from a usbkey doing install from vista dvd?

I have searched the forum but could not fully understand the guides i found, sorry.