vista and auto thumbnail

[bha19]

I have fsx deluxes sp2 running on vista 64 home premium. It has Microsoft net framework 3.5 sp1

I downloaded a program called auto thumbnail. I tried to install it and it worked. It also created an "exe" file like it should have. My problem is that when I run fsx and hit the alt key there is no option to take a thumbnail. does anybody know how to correct this or is it a vista problem