Yeah, it ran on my old 750mhz duron, but not nearly as well as it dees now.
One of the things I love about it is the ability to go literally anywhere on the map. Also, when you play the various single, and multi player missions, a mission may start out with the same soldiers in the same initial locations, but after you deal with them, the re-inforcements very often come from a different location, or use a different tactic, such as arriving in a truck, or an APC, or even a squad approaching through a forest.
Also the visuals, and in my opinion, the gameplay hold up very well even after 4 years. The terrain, vehicles, and people look realistic enough that the game really doen't look "dated" to me.
You might also be able to find copies on Amazon (or another internet retailer), or from Codemasters directly.