How can I assign an ID or class to the generated <td> from within robohelp

Im beginning to think I just need to make an application panel to handle assigning names/classes/ids to elements.

You can change the generated (output) HTML in whatever way you like. It may not work, but then that is for you to test :-) If you want to change the HTML inside the RoboHelp (source files) project, you'd have to regenerate the output to see the result. If you don't, the result of your labour will be lost to everyone.