When in game, press the button on your keyboard called 'Prt Sc'. It's usually near the delete, end and home buttons.
This effectively takes a picture of what's on your screen, and then all you have to do is open Microsoft Paint, or another image editing program, and select Edit/Paste. Then save your image as a .jpg and attach it to your post.
To attach it to the post, when you reply there is an attachment thing below the message box. Click 'Browse' and select the picture.
Also, please try to use proper spellings in posts, TGC forums are full of people from different countries, and they might not be able to read English easily as it is, without you abbreviating things.
Paul
Paul