USING DECOMPRESSION UTILITIES
Form #09.009
TABLE OF CONTENTS
The SEDM website uses compression utilities to reduce the size of files that you download from this website. This speeds up the download time and makes for a better experience for people who are using dial-up lines. Most of the people in rural areas of the Midwest, for instance, have dial-up lines or DSL because high-speed cable modem services are unavailable. The file format we use to compress our information is called "ZIP". This is a common format and there are many different public domain utilities that will decompress this format, many of which are totally free. ZIP file decompression is built into many versions of Microsoft Windows while in others, you need to buy a decompression utility. Below is a summary of the various versions of Windows and their support for built in ZIP decompression:
Table 1: Decompression functionality within various versions of Microsoft Windows
# | Windows Version |
ZIP decompression built-in? |
1 | Windows 3.1 | No (need ZIP utility) |
2 | Windows 98 | No (need ZIP utility) |
3 | Windows Millenium Edition | No (need ZIP utility) |
4 | Windows 2000 | No (need ZIP utility) |
5 | Windows XP | Yes |
6 | Windows Vista | Yes |
7 | Windows 7 | Yes |
If you want to use the ZIP decompression built into Windows XP, Windows Vista, or Windows 7, follow the procedure below:
If your computer's operating system does not have ZIP decompression built-in because it is not Windows XP or later, then you might consider getting either a free or a low-cost unzip program from the list below. The one we use to compress our files is WINZIP, but many users may not be able to afford this and may prefer a less expensive program:
Table 2: Third party ZIP decompression utilities
Product name | URL | Price | Notes |
PKZIP | http://www.pkware.com/software/pkzip/windows/ | $29.95 | Our personal favorite |
WINZIP | http://winzip.com/ | $29.95 | |
7-Zip | http://www.7-zip.org/ | Free | |
CoffeeCup Free Zip Wizard | http://www.coffeecup.com/zip-wizard/ | Free | |
JustZIPIt | http://free-backup-software.net | Free |
Click here for a link to Download.com for a list of several additional freeware unzip programs.
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