i've just never understood why some software that is made for Windows 7 and Vista, and that is not also made for XP will not run on XP why is this? what's the difference in the coding or compiling that makes some programs work for 7 and Vista only and not XP??? doesn't really make any sense to me... i mean, why can't i take an .exe from my Windows 7 machine and run it on my XP, like snipping tool for instance or even notepad??? what would have to be changed within the program so that it would run on an XP machine??? someone please explain???