1 - Log in to your paypal account.
2 - Then find the payment in the activity box and click the link for more details.
3 - Press the "Print Screen" button on your keyboard.
4 - Open MS Paint (or the image editor of your choice)
5 - Hit "ctrl" + "v".
6 - Hide transaction ID by painting over it and save.
7 - Upload it to an image host like
http://picasaweb.google.com/home.
8 - Copy the link to your image and put it in your post here by pressing the image icon in the editor.
Thank you!