Open up the downloaded installation package and double click on Use_This_Code.txt to open it in notepad.

Don't worry about what the code means, you don't need to know. If you're interested, feel free to have a look.

Press Control + A to select all of the code

Press Control + C to copy all of the code to the clipboard

Now you have the code ready to paste into Open Office

Open up an Open Office.org Spreadsheet

Select TOOLS / MACROS / MACRO

The Macro window will open

Left click on the Organizer button

The Macro Organizer window will open.

Left click on the New Module button on the bottom right.

The New Module Window opens

In the Name box type Lifespan

Like so.....

Then left click the OK button.

Now we're back to the Macro Ogranizer and you can see that Lifespan has been added to the tree under Standard.

Now we need to insert the code we copied, into the new Module.

Left click on the Edit button.

The Basic editor opens up with little fanfare. On most machines it will open up Full Screen. Don't panic.

Press CTRL+A to highlight everything in the code editor.

Press CTRL+V to paste the new code over what was there.

Your screen should look like this after you have pressed CTRL+V.

If it does press the X at the top right to shut down the Basic editor and you're ready to use the Lifespan Age Calculator Macro in any of your future spreadsheets.

See, easy as pie!