Thanks for that info. I've managed to come to that conclusion myself (tested and working on a computer with 220mb RAM) I did the following: 1. Created a WinPE 2.0 CD (not RAMDisk version) 2. Booted client PC with the WinPE CD 3. Mapped to a network share that had my prebuilt (and pre-sysprepped) XP WIM file 4. Ran diskpart with the following: select disk 0 clean create partition primary active assign letter=c format fs=ntfs quick exit 5. imagex.exe /apply <mapped drive>\xp.wim 1 c: 6. once download completed, exited cmd prompt and PC rebooted into sysprep stage of XP installation This is probably the best I can manage, unless there is some way of PXE booting to a really tiny WinPE that provides networking, diskpart and the imagex tools