Ok, I was downloading a file from Texas Instruments, and after downloading I accidentally archived the file in WinZip, and I can't open the file now. I tried to fix this by downloading the file from the internet again and it downloaded the file but it read it as a winzip file even as I downloaded it so that then the copy was unable to be transferred/opened and sent to a TI 89 calculator! I have tried the CD version of the file and the same problem appears. Do I have to uninstall and delete all winzip files to get the file to open?