thank for response. i have controlled and readed the guide, but i not understand much.. i have done this: 1) copied all i386 dir of XPPRO SP3 and subdir in c:\WXPP 2) i have extracted Boot image with ISOMAGIC 3) i have edited setup setupldr.bin and change all 4 i386 in WXPP 4) i have edited txtsetup.sif and substitute \i386 in \WXPP in x86 session 5) i have edited boot image and change i386 in WXPP 6) i make ISO with WXPP dir, boot image modified, and in root files WIN51*. and WIN51IP.SP1,SP2,SP3 now all function OK, but at first reboot ask me SP3 CD and in path giveme D:\i386. if i try to make CD SP2, ask me for SP2 CD. same problem. n.b. - my CD Letter is R: can you help me for find was wrong thanks