posting Screenshots in forums

[Juice]

Can someone help me with this? I'm just looking to post screenshots directly from my PC to the forums. Everytime I try, it asks for a URL

 

[Shortbus]

Have to upload to a site. I personally use imgur and copy the bbc forum code to paste

 

[Czech Razor]

gyazo.com super easy to take screenshots with and automatically opens it in your browser giving you the URL.