Your post's are totally confusing plus hard to read no paragraphs. Is this a Dell or Alienware machine and Alienware DVD will not Activate a Dell machine, yes Alienware is part of Dell but they use different .XRM-MS certificates and SLIC 2.1 string in bios. Doesn't mater if it is SP1 you should still be able to install and activate with correct DVD if it has SLIC 2.1 in bios.