When you open your old project with a newer version of InstallShield it should automatically get converted. Please refer to the help file for project upgrade notes.
Windows installer doesn't have a way for a scrollable list of radio buttons. Here's an example which is not exactly what you are looking for but it might give you an idea how you could solve this task: http://www.installsite.org/pages/en/msi/articles...
On one hand, I agree with you. On the other hand, I think it's not a good idea to use 10 year old software anyway, that hasn't got any (security) updates for a long time. Like Windows 8 may still run, but you shouldn't use it in a production environm...