Software Deployment

I have a conditional job setup to determine wether Oracle 8i or 9i should be installed. This will catch basically 95% of all the scenarios. I was wondering what the best way would be to make a prompt under the (default) condition for a catch all. If the job gets to default I would like it to prompt the PC to enter something like option 1 for 8i or 2 for 9i. I guess something simple like a batch script would work, but I am wondering if there is a better way?

Thanks for any feedback.