Can I force installation of a daily planner?

posted by  johnb (85)  11 months ago (www.vistax64.com)

I have been using Delrina Daily Planner for (Don't laugh) fifteen years
on seven different computers. It has worked with pre '95 Windows, Win 98
and even XP. I have not been able to install it into Vista. Is there any
way to workaround or force the install? I dread the idea of having to
hand copy all of the info to another program. The recurring
events/reminders and contact info are enormous. Planner files have the
extension '.DP'. Would greatly appreciate any advice. Thanks.

Paul