updating a JTable{Fixed it}

I'm fairly new to using a JTable. I can't seem to find a helpful link or tutorial on the net, so I need some help. My application will be updating the JTable constantly using a JSlider. Each time the slider is moved the jtable needs to be updated. Also, is it possible to remove cells from the table or add them? I will need to have up to like 360 rows,and then possible delete all but 30 of them. Basicly it's this, I've created a nice mortgage calculator and need the Jtable to update constantly, and the user needs to be able to switch between viewing an annual yearly table, and an annual monthly table(were the deleting or adding comes in)...

I would appreciate ANY help/suggestions or comments.