To create a .ZIP file in Windows XP, Vista and 7:

  The .zip file cannot contain any sub-directories, it should include only individual files.

  • First select all of the files you want to add
    • you can select multiple files by holding down the CTRL key on your keyboard and clicking (single left mouse click) on each file you would like to select
  • Right-click on the selected files then select  "Send To"  and  "Compressed (zipped) Folder"

Windows will then create a .ZIP file like the one below.