Please help. I`ve just bought Civ4. When i put it in my drive it just makes clunky noise, like it`s trying to read it but cannot. The first time it happened i took it back to place of purchase and exchanged. This is now my second copy and the same thing is happening ? My system is; Windows XP, Pentium 4, 2.50 Ghz, 768 RAM, GeForce 5200 248 MB, obviously got DVD. I have other games that run just fine on my DVD, X3 is one of them and generaly needs mid to top end systems to run it. I`ve even tried to put in CD`s and they at least run on DVD better than Civ4 !! Please help.