To get halo ce you have to go to www.halomaps.org and on the left there’s a link to utilities  and halo ce should be there. When you click download you want to save go to drive c and the go to program files and then go to Microsoft games and the click ok after it downloads a screen should come up that looks like the one that came up when you installed halo combat evolved. Then you have to put in your cd key after its installed have fun and check out my other pages to find out how to get maps