Open a photobucket account for free.
Image hosting, free photo sharing & video sharing at Photobucket
Then click on upload pictures link. It will open a pop up screen. At the very top of that click on the arrow to browse your desktop.
Then click on the picture you want to upload to photobucket.
Once file is there you then want to get the IMG code. This is done by copying and then pasting it into your post. Click preview of your thread and you should see your pictures. If all is good post it up.
Another tip is to open up 2 web pages simultaneously so you can bounce back and forth copying the IMG codes from one then pasting them to the other.
good luck