Always scan downloaded files with updated antivirus software, as older game installers from unofficial sources can sometimes trigger security flags.
The game was built for 4:3 monitors. You may need a "Widescreen Fix" (available on PCGamingWiki) to prevent the image from stretching.
Looking for a way to play ? Since this budget shooter from 2006 is now considered "abandonware" by many, here is the lowdown on how to get it running today: Where to Find It