@nuhi: Congrats on, and thanks for, a great program . Works like a charm for me - press a button, get a coffee, done! @CBC: #1 : Yes, after shrinking this CD behaves just like a normal XP installation CD, except that it can only be used as a full install , booted from CD (the upgrade options are removed). The directory structure is not really 'different', just a lot of extra crap has been removed that is not needed. #2 : nLite just cuts down the size, no other changes are made, and this is only in the CD creation stage, so when you boot the CD in your computer it behaves just like a normal install - you have the usual options to create and delete partitions, choose install locations etc etc etc. As mentioned above, the upgrade options are generally not avaliable after shrinking, but for XP a full install is recomended over upgrade anyway . The CD can also be made unattended as usual. Virtual PC is a free download from microsoft by the way .. you get 45 days to test it before needing to register .. but once you get hooked on unattended, there is always 'one more improvement' you can make to your CD, so personally my windows install never lasts that long anyway More info Here on Virtual PC. SP.