You mean the 'html text-only lines?

Some people with table layouts had problems with the box being too big-there's a patch for that on my site until I get the next release out:
http://www.notgoddess.com/scripts/ne...bscribe#issues

But if you are talking about
HTML TESTO
solo

....you can edit that same file and insert a '<br />' in between the two radio buttons so you'll see:
HTML
TESTO solo

file: includes/templates/your_template/sideboxes/tpl_subscribe.php

Like this: (lines 21-24)
Code:
   if(EMAIL_USE_HTML == 'true') {
    $content .= '<label>' . zen_draw_radio_field('email_format', 'HTML', true) . ENTRY_EMAIL_HTML_DISPLAY . '</label>';
    $content .= '<br />';
    $content .= '<label>' . zen_draw_radio_field('email_format', 'TEXT', false) . ENTRY_EMAIL_TEXT_DISPLAY . '</label>';
   }
I'll be off now...but hope that fixes it.

-Ng_