Might be worth checking with sony support for that. I have the same problems with installing acrobat reader. Try copying the install to the machine , right click on the installer and select properties, select windows XP service pack 2 in the backwards compatability list. This normally works fine. You might need to try to so the same with the .exe when it is installed.
If you guys want to know more about the guts of vista check out http://channel9.msdn.com, lots or programming/developer talks, especially about what happens "under the hood" of Vista.