I am not really a gamer, but i thought i'd indulge in Combat Flight Simulator 3, as i do like sims. The system requirements on the box seemed OK, and i felt quite smug because i thought my system was more than adequate for the job. Big mistake! I have a Pentium 2.4GHZ CPU, 768MB PC2100 RAM, 120GB 5400RPM hard drive, Geforce 4 MX440 8xAGP, MSI Sis648 Max 8xAGP motherboard. The sim graphics are stunning, but the stuttering is terrible! It is unplayable, even with all the display and audio settings set to bare minimum. I dont understand because some peoples systems i have read about have far less specced machines than mine, and they run fine! I dont really mess about with the XP OS, or the bios, so my machine is quite untouched in that way. My question is - what would be the best upgrade path...more RAM? better graphics card? faster RPM hard drive? all?