What version of civ do you have? There are different versions of the patch for each version of civ. If you have MGE for example, you need to take the files that come with the patch and put them in your civ folder on your harddrive, but you need to remove the files that the patch are replacing. To get to the area where these files are stored on your harddrive, Right click on the civ shortcut icon, then left click on properties. Remove the files that are to be replaced (Rules, Icons, ect.), and put the new ones in their place. Save the orginal files in another folder that you should create for them. You can switch back and forth by simply switching the files back. If you lose the orginals, don't worry about it. Simply unistal civ, and reinstall it, as the files are hardcoded to the CD.
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