Autounattend - whats wrong?

What´s wrong in Autounattend.xml below? I put it in a floppy but Vista just ignores it...

help!

<?xml version="1.0" encoding="utf-8"?>

<unattend xmlns="urn:schemas-microsoft-com:unattend">

<settings pass="windowsPE">

<component name="Microsoft-Windows-Setup" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

<UserData>

<ProductKey>

<Key>***************************</Key>

<WillShowUI>OnError</WillShowUI>

</ProductKey>

<AcceptEula>true</AcceptEula>

<FullName>Full Name</FullName>

<Organization>Final FX</Organization>

</UserData>

<DiskConfiguration>

<Disk wcm:action="add">

<CreatePartitions>

<CreatePartition wcm:action="add">

<Order>1</Order>

<Size>15000</Size>

<Type>Primary</Type>

</CreatePartition>

</CreatePartitions>

<ModifyPartitions>

<ModifyPartition wcm:action="add">

<Active>true</Active>

<Extend>false</Extend>

<Format>NTFS</Format>

<Label>OS_Install</Label>

<Letter>C</Letter>

<Order>1</Order>

<PartitionID>1</PartitionID>

</ModifyPartition>

</ModifyPartitions>

<DiskID>0</DiskID>

<WillWipeDisk>true</WillWipeDisk>

</Disk>

<WillShowUI>OnError</WillShowUI>

</DiskConfiguration>

<ImageInstall>

<OSImage>

<InstallTo>

<DiskID>0</DiskID>

<PartitionID>1</PartitionID>

</InstallTo>

<WillShowUI>OnError</WillShowUI>

</OSImage>

</ImageInstall>

</component>

</settings>

<cpi:offlineImage cpi:source="wim:e:/download/incoming/vista%20x64%20retail/lrmcxfre_en_dvd/sources/install.wim#Windows Vista ULTIMATE" xmlns:cpi="urn:schemas-microsoft-com:cpi" />

</unattend>