Displaying Images in a JSR 168 Portlet

Hello, I have been developing JSR 168 portlets for a while, however, I am fairly new to Vignette.  The portlets I have developed work great in other portals (like pluto and jetspped). I recently deployed one to Vignette, and it worked, except the images are not being displayed In my Portal Application,
I keep my images in directory of <Portal Application>/jsp/images. In the HTML I use a regular image tag, but reference the path
with the context path of the portal:

<img src=”<%= renderRequest.getContextPath()
%>/jsp/images/myImage.jpg”>

This has worked with other portals, but not Vignette. I’ve read the Vignette
documentation, and some user forums, and everything seems to agree with what I am doing. However, I can't figure out what I am doing wrong.  Has anyone run into this problem
before? Does anyone have any ideas as to what I might be doing wrong?