|Most operating systems include a utility for zipping and unzipping files. This tour features zip utilities from Windows Vista, Windows XP, and Mac OS X.|5355|4095|1410|3075||5775|6320|0|0|
|Suppose you're using Windows Vista and you want to zip these three files before sending them as an e-mail attachment.|8845|2055|1095|3075||5775|6320|1|0|
|The process produces a new, zipped folder named for one of the original files. The name of this folder can be changed following the usual steps for renaming folders.|3240|5050|1365|3300||5775|6320|3|0|
|The zipped folder is much smaller than the original files and is a much more suitable size for an e-mail attachment.|8860|2625|1245|2820||5775|6320|1|0|
|Unzipping a folder in Windows Vista is easy. Double-clicking the folder displays its contents and allows you to pick the file you want to open.|8830|1785|1395|2640||5775|6320|1|0|
|You've seen how easy it is to compress files while using Windows Vista, Windows XP, and Mac OS X. Remember to compress big files before you attach them to your e-mail messages.|4500|5085|1605|3360||5775|6320|0|0|