I have Windows 7 64-bit OS and have a software program application installed in the C drive. This application is not working though it is working in Windows XP. I understand that there are two program files folder in a 64-bit OS. The 32-bit applications are usually installed in the Program Files x86 folder, but I have installed this particular application in the C drive and not in the Program Files x86 folder. I want to know if this is the reason as to why this application is not running on Windows 7 64-bit OS. As I donot have the installtion software package with me, I need to know so that I can arrange this software to be installed in the Program Files x86 folder (I need to call on the vendor).