[Quelty]

Create an account at places like Photobucket, Imageshack or the like ( I use Photobucket), upload your picture to that site and when uploaded there will be some tags underneath, select the img one, will look like this;

Code:

[IMG]http://i13.photobucket.com/albums/a266/smeefarkya/modtomax.jpg[/IMG]

Paste the tags in your post, click preview button before posting to make sure it works and if ok hit submit and voila your screenshot will show in your post.

Cheers

Quelty