How to post a screenshot?

I have a few screens that I'd like to show. Do I need to host them elsewhere then link, or can I upload them and link. How do you all do it please?

 

Here is a "Uplod a File" Button right next to your "Post Replay" Button.

 

Oman, thank you I just saw that just this moment.
It was hidden, I swear it was, lol

 

The other way is to upload to an account you have at a place like photobucket and leave a direct link to the picture on the forum.

 

And yet another way ;-)
Just select some pictures and "drag & drop" them into your text box.

 

I tried that with my Steam pictures and I couldn't get them to show up, so I just copy one off of my hard drive into the forum