NextGen – Putting a description under Slideshow pics – help tried for weeks

I am using NextGen to generate a slideshow on my front page. I have put these into a Gallery with descriptions next to each thumbnail pic and inserted the code into a post so that it makes it work. The code is as follows:

[slideshow id=3 w=588 h=400]

The plugin site shows a slideshow with descriptions under each picture but I can’t seem to see the code or instructions on how to get it to work.

Does anyone know. I have been asking in the forum for weeks now.