Problems with running CIV IV (delete if not allowed)

So after playing for V and VI for a while, I wanted to get back to my first civ game and got Civ IV from the attic. I put the disk in my external disk drive and installed the game. Everything went smoothly. But now when I launch the game, it asks for permissions. Once I accept these permissions, the screen just closes and nothing happens. No game running, nothing.

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I troubleshooted and let it run in Windows XP Service Pack 3, as is recommended on the box. I also checked for administrator trouble but everything seems to be in order. Lastly, I looked all around the box and disk for a code (maybe I could 'activate' it somewhere and download it like that) but found nothing. The game didn't come with any manual, just the box with the CD-ROM inside.

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Now for my question: is there any way to fix this and still play CIV IV? Could I get it to activate on Steam somehow? I tried letting Steam detect it but it doesn't recognize it as a game at all. Any advice would be appreciated!

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Thanks for reading, and feel free to ask for additional information/pictures :D