For simple layouts, LibreOffice (free) can open some older PageMaker files saved as .EPS or .PDF, though layers are often flattened.
What (Windows 11, macOS, etc.) is your computer currently running? Share public link
For those attempting to install the software today, it is essential to understand that PageMaker 6.5 was designed for much older hardware and operating systems. The minimum requirements were:
Version 6.5 was one of the first versions to attempt web integration, allowing users to export publication layouts directly into basic HTML pages. Technical Specifications and System Compatibility