Can't start a new campaign. Help.

Ok so here's the story. I modded part of the game to give me tons of money to start with. Well I got bored of conquering 90% of the world with Julii and wanted to start a game with the Brutii faction. So I replaced the file with a new, unmodded one. Now I can't start ANY campaign at all (lost my CD so I can't reinstall).

Any ideas?

Any ideas? I'm really wanting to play another campaign.

Unless you backed up yopur files, then it's not easy to get the original files. But I'm not an expert and I've also messed up my game modding, so don't ask me.