Halo Help

I bought Halo Combat Evolved a few weeks ago but never used it. Then
yesterday I installed it. My friend wanted borrow cd but he mistakenly broke
it when he was returning it, so anyway I tried to play online but I kept
getting a sign checking for updates so installed the patches but after I did
it told me to insert Halo CD-ROM to reset game. Before the CD got broken I
sent the files from my Halo CD to my documents and I later copied them to a
disc and named it Halo just incase something happened but I still get the
error to insert cd-rom. I was wonder if there is a patch I can add with
having to insert the cd or do I have to buy another one.