That's fine but when using Firefox I am able to select an entire column, click on the 'right justification' toolbar button. CuteEditor.NET then appears to set the alignment of individual cells in that column as you can see from the following html:
<table border="1" width="419">
<tbody>
<tr>
<td>Left Aligned Text</td>
<td style="text-align: right;">Right Aligned Text<br></td>
</tr>
<tr>
<td>Left Aligned Text<br></td>
<td style="text-align: right;">Right Aligned Text</td>
</tr>
</tbody>
</table>
I created a 2x2 table, selected the entire 2nd column and clicked on the 'justify right' button on the toolbar. You can see how it has added a style="text-align: right;" css style to each individual cell in the column I selected.