hi i am trying to integrate vista SP1 in vista ultimate using vlite ( 1.2Rc)
i am referring some tuts on this forum

i am running on XP professional. the problem is i can not select service pack... it allows me to go to next step.
whats am i doing wrong here....

i am attaching screen shot for the same

is it necessary that ur system should be running on vista to integrate sp1 ?