Hit the print screen button.
Open Paint.
Hit paste button.
Save as... (Preferably as a .jpg)
Go to imageshack and upload the saved file.
then, get the link of the uploaded image and put it between there tags
CODE
[img] [/img]
so it would be something like..
CODE
[img]http://www.staredit.net/style_images/1/p_mq_add.gif[/img]