You may have to run the install as an administrator on your Vista Box. I have Home Premium32 and don't recall having a problem, but I do it without thinking.
Since I have Vue6 on my PC also, the files went into \Documents\e-on software\Vue6Esprit\Books Studio\GeekAtPlay Studio\Vue7 From The Ground Up
If it had installed to my Vue 7 directory, the path should be \Documents\e-on software\Vue7\Books Studio\GeekAtPlay Studio\Vue7 From The Ground Up
On XP I believe you would be looking in the My Documents \e-on software... folder.