Yeah coz some of the ACP settings already do.
Take a look at this one for example
Code:
<setting varname="quickreply" displayorder="10">
<datatype>number</datatype>
<optioncode><![CDATA[<div class=\"smallfont\"><label for=\"qr0\"><input type=\"radio\" name=\"setting[$settingid]\" id=\"qr0\" value=\"0\" tabindex=\"1\"" . ($setting['value'] == 0 ? ' checked="checked"' : '') . " />$vbphrase[no]</label></div>
<div class=\"smallfont\"><label for=\"qr1\"><input type=\"radio\" name=\"setting[$settingid]\" id=\"qr1\" value=\"1\" tabindex=\"1\"" . ($setting['value'] == 1 ? ' checked="checked"' : '') . " />$vbphrase[yes] - $vbphrase[qr_click_not_required]</label></div>
<div class=\"smallfont\"><label for=\"qr2\"><input type=\"radio\" name=\"setting[$settingid]\" id=\"qr2\" value=\"2\" tabindex=\"1\"" . ($setting['value'] == 2 ? ' checked="checked"' : '') . " />$vbphrase[yes] - $vbphrase[qr_click_required]</label></div>]]></optioncode>
<defaultvalue>2</defaultvalue>
</setting>
I guess you can figure it from there