Never mind - I figured it out [RTFM
]
In system settings go to the section that has all the tinyMCE options [you can filter for it]
look for the enabled plugins item,
add "table" to it
I added a third row of buttons just for the table buttons: "table,tablecontrols,row_props,cell_props,delete_col,delete_row,split_cell,merge_cell" which I got from the tinyMCE wiki
as for adding style sheets, it appears that you just define your selectors normally in your CSS and add a comma separated list of the selectors you want available in the CSS Selectors item in the system settings - though I have not tested that yet.
-sean
