Paste those .dll files directly into your The Mummy Returns game installation directory (where your new .exe lives).
Here’s how to do it, based on guidance from the Internet Archive's own forums:
Because the Internet Archive version is a raw disc rip, the game will ask you to "Insert Disc 1" even if the ISO is mounted.
Getting the Internet Archive version of The Mummy Returns to work smoothly requires bypassing obsolete copy protection, fixing resolution issues, and adjusting frame rates. The Core Compatibility Issues
The "Internet Archive fix" for The Mummy Returns refers to community-led preservation and digital restoration efforts aimed at addressing the film's infamous visual effects—specifically the , often cited as one of the worst in film history.
Open the virtual drive, right-click Setup.exe , and select to install the game.