Unfortunately, even though you are running Vista, it appears that even Vista is too new for the Scrapbook Assistant. Last driver Updates were issued for XP 32 bit.
Having said that, Amazon carries the program (one left in stock); price is about $8 US.
Will it run on Vista? Perhaps in compatibility mode? Maybe. It does not cost a lot to find out.
Various reviewers mention that the software is not for "newbies" -- I suspect this means the program does function well and provides a nice output (final product) ... if you can figure out how to complete your project.
It might be worth looking at the User Guide so you can see whether the program is worth pursuing.