Hello everyone,
I have been checking out this forum for a few years.Finally I decided to post some pictures but I wasn't able to, so could someone give me instructions?
Thanks

You have to upload them on a upload website like www.imageshack.us , after that you get a link which you can directly past in the message box.

A few other websites where you can upload them are:

Flickr.com
Photobucket.com
Tinypic.com

Posting Tips - Please Read : Inc. HowTo post images, embed youtube, dailymotion (http://www.skyscrapercity.com/showthread.php?t=539009)

Thanks for your help.