posting pictures images using a mac

Embarrassed to say but I either can't get this to work or it doesn't work for on MACs. Anyone know how to post pictures/images using a Mac?

Thanks in advance.


BLUESDOG
INSTRUCTIONS ARE BELOW
Find your GIF/PICTURE
Right click your GIF/PICTURE to open up a box with the word properties at the bottom
Left click the word properties which opens up another box with an address (URL)
Copy and paste the URL address onto the Hotcopper page so that it looks like the next line below

http://members.tripod.com/~star_43/bevs/beer1.gif

Using the following before and after add these to the URL address
BEFORE<img src="
AFTER ">
Now add the BEFORE and AFTER to the URL Address so that it looks like the line number 10.below
<img src="http://members.tripod.com/~star_43/bevs/beer1.gif">
And thats it, cheers and goodluck

Use the below web site to test out your gifs/pictures (scroll to bottom of web page)
http://www.htmlprimer.com/lessons/lesson1.html