After a couple of cups of coffee and whilst (she) was on a trip to the shop to get me some baccy, the step-daughters PC miraculously unlocked itself! The SD learnt a lesson there. Don't use the same password to lock your PC that you was using when you were 14! She now has that sort of 'look of terror' as to what I may, or may not (not!) seen on her PC. I, of course, are remaining silent, but giving plenty of knowing smiles and winks out! Well, you have to take the mickey, don't you! It was actually a Public Network I was trying to set in the autounattend file as opposed to a Home one. Although those registry key entries will come in very handy and a big Thanks for those!