Ok the "IMG" tag is just above the message text area ... just below the font size drop-down.
Hit the tag, then you will be prompted to insert the URL. Insert the URL link to the image you have in PrintRoom.
Before you finish the post it will look something like this ...
[.IMG]http://www.printroom.com/yada,yada,yada[./IMG]
except for the dots before the first IMG and the dot before the slash on the last IMG (I had to insert those to prevent it from trying to actually post an image).
Is this what you were asking?
As for the "waiting period" while it does a search for new posts, it takes maybe 2-5 secs for me (on cable) ... might take a little longer on dial-up if you haven't been back for a few days, but it shouldn't take 5 mins.
Ward, can you help any more here?