Finally click on the post message button. Again wait a few seconds for it to load. Finally, this will bring you back to the last screen that you were on, and your message should now be posted. To get a message posted you must click the post button twice - first time to get a preview, second time to make the final posting. I have found that the internet browser supplied with AOL does not seem to do this reload on a consistent basis.
Nothing seems to have happened.
You will have to just trust that it was posted properly. Depending on the amount of RAM in your computer it is possible to open AOL - get the modem hooked up, then load another browser such as Netscape or Internet Explorer. Have both applications running simultaneously. That is what I do from my home. Make sure the the browser window is large enough to see the scroll bars on the message box before you start.