Community-run servers are still active. To join them, players typically need to update their BFVietnam.exe with a master server patch that replaces the defunct GameSpy browser.
Some users provide comprehensive "all-in-one" zip files (similar to the one in your query) that include the base game pre-patched for modern systems. Community-run servers are still active
Because official servers (like GameSpy) have long been shut down, the community keeps the game alive through external patches and private servers. Community-run servers are still active