I was struggling with this, and did email Tech support, but figured out what I did wrong and wanted to share...
If you want to have an image pop-up using the sexy lightbox, in a column in your csv file, enter:
/images/../imagename.gif or you may have to use the quotes
"/images/../imagename.gif" depending on how you are outputting your csv file
In the Data Tables module, the format for the column that contains your link should be entered in the Format column as:
<a href="
yourURL/{$columns:YOURCSVCOLUMNNAME}" rel="sexylightbox">{$value}</a>
GREAT software!
