Lads, believe me, its easy!!
First get yourselves an account with…
http://photobucket.com/
Find a picture you want to post on the site, or use one of the picture host sites if it's your own. You can't link from your PC, you have to put it on the web first.
Right click on the pic, a box appears, click 'properties' - at the bottom I think.
In the next box look for 'Address(url) Left click and drag to highlight the stuff next to the address.
Now press control(Ctrl button) + C
Now in the forum post reply bit put in whatever text you want then press 'Img'
Now press Control(Ctrl button) + V
The pic address will appear in the space after the 'Img' bit.
Now press 'Img*' again.
Add any other text you want then submit it. Hope it works for you.