为什么我的程序不会从Program Files目录运行，而是从其他地方运行？

My program run fine from anywhere else on my drive apart from the Program Files directory (windows XP), I am logged on as administrator so I have full permissions to the drive. It runs fine from the root of c: the windows directory basically anywhere else apart from Program Files. I have recreated this problem on 4 different machines 2 XP, 2 Vista. My program run fine from anywhere else on my dr