I only have Combat Evolved for the PC but I think I know, you insert the CD into your CD and/or DVD Rom drive and wait for it to pop up and there should be a button that says "Install" follow the steps then get your CD case and look on the back or inside the front part beside the disk holder (like it does with Sims 2) for the CD key. For Evolved, it's on the back of the case. Not sure about 2, sorry.
They are both good, but halo 1 for PC has great maps and you can make custom ones, but halo 2 has that feature too. i would recommend halo 2
No. Bungie stopped producing Halo games for Pc after Halo 2
Halo 3 ODST is not for PC but Halo 1 and maybe Halo 2-3 are
Yes you can play both Halo: CE and Halo 2 multiplayer on PC.
Only Halo combat evolved and Halo 2 are on PC.
Halo for the PC has already come out, so has the halo 2. I know how to get Halo for the PC for FREE! Go toYutube and you'll see some ideas.
There are demos for Halo CE, Halo 2 PC and Halo Wars
there is no halo zero 2 there's halo zero halo PC (1) halo for vista (2) and halo 3
Buy it from a PC games retailer
Halo 2 doesn't have one.
Yes, only HALO 1 and 2 though
Halo 2 for PC and cod2 for PC because both are old but both are rated game of the year.