If you are running Windows 98/Me/2000/XP, you may change the .zip extention by running Windows explorer (NOT Internet Explorer!!!). This can usually be found under the Start>Programs>Accessories menu. If you can't find this, then just click on Start>Run... and type "explorer" in the dialog box and click on the OK button. In the file listing find a file that has the .zip suffix (assuming that you don't have the "Hide known file types" option chosen under folder options, if you do, uncheck this now and click on apply, then OK). Right mouse button click on the file with the .zip suffix and in the drop-down menu that appears click on "Properties". The second line of text under the first tab will say something like "Opens with:" followed by the icon and name of the program that is currently associated with opening your .zip files (in your case this should read "Kodak Image viewer") followed by a button that is labled "Change". click on this button and after a few moments it will open a list box full of Icons, each followed by a program name. Assuming you have installed WinZip or PKZip, or one of the many file extraction programs available, scroll down to it and select it with your mouse, then click on OK.
Don't sweat breaking the old association the image viewer had to zip files. It serves no purpose as a zip file is not a valid format (as you've already found) for the Kodak image viewer anyway.
Hope this helps
