I downloaded WLE to my desktop, it synced to my Laptop.  Both are running Windows XP pro w/sp 3.    The  Photo Gallery works perfectly on the laptop, but is a mess on desktop.  So I removed the desktop program in Add/Remove Programs, and reinstalled Live Essentials on desktop.  Now, in Program Files (C drive) the laptop shows 36.9 MB, but the desktop shows 68.7 MB.  Why the difference?  I never did manually install the program in laptop.