If you want the game to work look good on a modern monitor (fixing the black bars on the side of the screen), you should use the ThirteenAG Widescreen Fix . This community-made patch includes a No-CD fix as part of its installation.
A: It can be, but you must be careful. Downloading files from untrustworthy sites can expose you to viruses and malware. Always stick to well-known, reputable communities dedicated to PC gaming preservation. The PCGamingWiki is an excellent starting point.
This is a graphics card compatibility issue. Downloading a wrapper like dgVoodoo2 translates old DirectX 9 commands into modern DirectX 11 or 12, stabilizing the graphics.