Ensure you obtained it from a reputable preservation site like Internet Archive or MyAbandonware . To help you further, could you let me know: Are you trying to install the game on a modern PC? Did you run into an error while trying to open the file?
Always run the archive through a scanner like VirusTotal before opening. C2_DVD.7z
Uses the .7z format, which requires a tool like 7-Zip or WinRAR to extract. Ensure you obtained it from a reputable preservation