I have found that as long as you install service pack 2 on a system that HAS JUST HAD WINDOWS REINSTALLED that it works fine, and sure adds a whole load of security upgrades. Just please back up first if possible!
Renegade single player was definitely too easy - except for a few parts that were practically impossible! Still, considering it was Westwood's first FPS, it's pretty cool. It's the multiplay that makes the game, tho - never get tired of huge online matches. Does anyone still play it online?