To install Lotus Approach on a new system running Windows 11 (such as your DELL), you may encounter compatibility issues due to the older nature of the software. One potential solution is to try running the program in compatibility mode. To do this, right-click on the program's executable file, go to Properties, and navigate to the Compatibility tab. From there, you can select an earlier version of Windows that is known to work with Lotus Approach. Additionally, you may want to consider virtualization software or seeking alternative software that is compatible with Windows 11.