For just a few dollars (often less than $2 during a sale), you can get a legitimate copy that is pre-configured to run on modern systems:
Torrents for older "abandonware" are often unmonitored, making them easy targets for malware or bundled adware. Thief Gold Torrent Download
The original 1998 files hate modern Windows. Without specific community patches, the game will likely crash, have broken textures, or run at 1,000 FPS. For just a few dollars (often less than