Arie and TAin: thanks for your responses. I had these goals: Create an updated XP SP2 install for a Virtual PC instance Compile a list of updates for my father's XP computer Lastly, have a slipstream image for archival purposes But, (1) has licensing issues -- as I understand it, Microsoft expects ~$270 for a second virtual instance of XP on my machine . Later, I found this blog entry: IE6 and IE7 Running on a Single Machine, which has a link to download a (time-limited) VPC image for testing IE7 alongside IE6. So, that problem is solved -- for now. I think (2) is something HFSLIP should easily do -- I just leave off the Install CD and SP2 images, right? Item (3) should stem naturally from Item (2) -- can I test the install on a Virtual PC without tripping the WGA alarm? Hope that explains it better. Ken