i read this olso on othe post my question are about (in other other word) if i slipstream XP Pro source (SP0) to SP2 and after slipstream to SP3 have option to bypass the productkey activation ? pratically: 1. create directory with XP Pro source (SP0) 2. 'decompress' SP2 into this directory 3. 'decompress' SP3 into this direcotry make CD from this directory sorry for some 'wrong' word but i'm into first time try to slipststream procedure