Simply select a cell in the row or column, then open the object editor. In CHP 2.0, you need to make sure the palette is completely expanded by clicking on the little blue triangle in the lower right corner of the palette. In CHP 3.0, click on the Cell tab at the top of the palette. We are interested in the width and height field in the Cell section. Otherwise, select either Pixels or Percent from the pop-up, and enter the desired size.
Pixel settings are the raw number of pixels on the screen.
Percent settings are calculated as a percentage of the size of the object which contains the table, whether it is another table, a frame, or the browser's window. You can also adjust the pixel height and width of cells in a table by dragging the cell's border. When you place your cursor over a border, you will notice it changes into a resize symbol. Click and drag to change the dimension. In the original verssion of CHP, you need to edit the HTML for the table in order to change width and height.