OK Guys, thanks for the input. The reason I asked was not for wanting to save HD space, I have more than enough of that. It was purely to save space on the disc. You see, the way I see it after making the SP2 CD. I have already used up 671MB on CD-R, now that doesnt leave much room for many apps, if any. Yes, I know I can make a DVD, but please correct me if I'm wrong. CD-ROM reads at 48x, DVD-RW reads at 4x. That would mean installation would be over 10x slower, wouldn't it? Would it not take an age to install? Thanks again...