When files are downloaded to your computer, they are usually in the zipped format. In order to unlock these zipped files, you will either need to use a program like WinZip or something similar. On a PC, you can use a few clicks of your mouse even without a program to unzip files.
Unlocking a File With WinZip
Visit the WinZip website (see Resources).
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Click on "Get Free Trial."
Enter your e-mail address and then click "Download Evaluation" in order to try WinZip for 45 days.
Download the program.
Open the file you wish to unzip. Right-click it and choose "Open With" and then select "Browse."
Locate WinZip and select it. Click "OK."
Unlocking a File on a PC
Open the file you wish to unzip.
Right-click on the file and choose "Extract All."
Choose the file that you wish to place the extracted files in.
Check the box that says "Show extracted files when complete."
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