|You may want to include the name of the application, someone using the same app may be able to share with you their workaround.|
For now though, try the -- Windows XP -- compatibility mode installation suggestion from jefro & post back. Unfortunately, software publishers fold up every now & then, leaving their customers in limbo. What you need to do is to start looking at a viable alternative because sooner rather than later you will be forced to dump the program.
Windows 7 News!