Hi there and welcome to pt!!
if you go into imagestation choose the pic you wanna post and click the second mouse button. A list will pop down go to properties and click it. then a little box will pop up onto the screen. Where it says URL highlight all the words and second click and choose copy this time... Come into here start a new post and put

{img} paste here {/img}
Don't use that type of brackets though I just did so it didn't take this as a picture use [ ] these ones


except don't leave the spaces. When you paste the words in between the img boxes make sure you don't leave a space before you write {img} {/img} if you have any troubles you can PM me anytime