The new installation of OpenOffice.org is a self-extracting archive and does not require a separate unzipping utility such as 7-Zip.

Extract the downloaded file into its own folder. If you have Compressed Folders installed, the easiest way to do this is to right click on the file and then choose Extract All...

Open Command Prompt (if you have Windows NT, 2000 or XP) or MS-DOS prompt (for other versions of Windows). You should find this on the Start Menu somewhere under Programs (on some versions of Windows, it is in the Accessories folder).

You should then type the location of the folder followed by "install\setup /net". For example, if you unzipped the files to "C:\OpenOffice Setup\" you would type C:\OpenOffice Setup\OOo_1.1x_Win32Intel_install\setup /net followed by Return.

Then follow the on screen prompts ... make a note of the folder in which OpenOffice.org 1.0 is installed onto your computer.

Note: Depending on your install set you may be asked if you want OpenOffice.org to be your default Office suite. If you answer "yes" and then change your mind, returning to the prior state is tedious. You need to reassociate all Office files.

This will install a shared version of OpenOffice.org on your computer. When each new user on your machine opens OpenOffice for the first time, they will be taken through a few steps to install user portions of the software in their individual areas.