The TNBW editor can handle pictures easily. You have to make sure it is sized properly and ready for insertion. Then go to the little "picture" icon at the top of the editing window. When you click it, you have three tabs. The first tab is the easiest. You simply seasrch on your computer for the picture and follow the prompts. The second method involves hosting your picture offsite. Then you insert the URL for that picture into the box and click OK.
The first method hosts the picture on the TNBW server, so be careful how big it is and how many you put up there. Personally, I have a web site of my own where I host my pictures and only provide the URL to it in my postings.
Almost midnight here in EST, so I am going to shut down and join the family.
Bill