1. Add this line to winnt.sif under [unattended]: UnattendSwitch="yes" 2. Set your regional settings via Setup Manager which you used to create your winnt.sif file. 3. Execute PsShutdown at the very end of the batch. 4. Windows XP with SP1 slipstreamed comes in at 514MB, if you have a 700MB CD, then you have 186MB of free space. Add to this: 22.3 MB from removing Support, Valueadd, and Docs. and 37.6 MB from removing WIN9XMIG, WIN9XUPG, WINNTUPG in \i386 (only remove if you don't plan on upgrading). This makes a total of 245 MB of free space.