Actually, I accomplished this by creating my own template for my form. I replaced the bit with table following
<if @elements.widget@ in radio checkbox> in the /packages/acs-templating/resources/forms/standard.adp with the following table in my new template.
<if @elements.widget@ in radio checkbox>
<if @elements.label@ nil><td colspan=2>></if>
<else><td></else>
<noparse>
<table cellpadding=4 cellspacing=0 border=0>
<formgroup id=@elements.id@ cols=3>
<if \@formgroup.col@ eq 1>
<!-- Begin row, i.e. <tr> --> <tr>
</if>
<!-- Cell layout, i.e. <td>...</td> -->
<td>
<!-- Cells may be unoccupied at the end. --> <if \@formgroup.rownum@ le \@formgroup:rowcount@>
\@formgroup.widget@ \@formgroup.label@ </if>
<else>
<!-- Placeholder to retain cell formatting -->
</else>
</td>
<if \@formgroup.col@ eq "n">
<!-- End row, i.e. </tr> -->
</tr>
</if>
</formgroup>
</table><br>
<formerror id=@elements.id@><br>
This makes much prettier radio and checkboxes in my forms:)
