There are a couple problems with the code you have. The following has been corrected:
<img class="alignnone" title="Anthony Caylee" src="http://niecey456.files.wordpress.com/2009/02/anthonycaylee412.jpg" alt="" />
If you want the image centered in the sidebar, replace "alignnone" with "aligncenter".
If you are not familiar with HTML, my suggestion is to start a draft post, then insert the image and then switch to the HTML tab, copy everything there to the clipboard and then go to the text widget and paste it in.
Also, I would suggest going to settings > writing and selecting "WordPress should correct invalidly nested XHTML automatically" and then click save changes at the bottom of the page. That will ensure that wordpress will correct any code problems for you in posts and pages automatically.