Cant load 'asms' from sp3 on usb fresh install

Please Help ! I am trying to fresh install xp on a dell mini 1210 from a usb. Copied xp with service pack to usb using wintoflash. Then inserted usb into dell. Got dell to tranfer all the files from my usb .Then started windows from my usb using disk 1 partition 3 option. When setup resumes i am asked to insert floppy disc xp sp3 into drive E. Hit ok. Then file 'asms on Windows xp home edition sp3 cd is needed. type in the path E:\$WIN_NT$~LS\1386 is already loaded by default but nothing happens . I try A,B,C,D,F,G,H: still nothing. What am i doing or what have I done wrong? or is there another solution . I feel as if im close but not quite there yet. Thanks in advance