Hi,
Edit your "includes/view-functions.php" file, search around line 1418 and 1457 you'll see these code :
$element_markup = <<<EOT
<li id="li_{$element->id}" {$error_class}>
<label class="description">{$element->title} {$span_required}</label>
<div id="li_{$element->id}_div_1">
<input id="element_{$element->id}_1" name="element_{$element->id}_1"
class="element text large" value="{$element->populated_value['element_'.$element->id.'_1']['default_value']}" type="text" />
<label for="element_{$element->id}_1">{$lang['address_street']}</label>
</div>
<div id="li_{$element->id}_div_2">
<input id="element_{$element->id}_2" name="element_{$element->id}_2"
class="element text large" value="{$element->populated_value['element_'.$element->id.'_2']['default_value']}" type="text" />
<label for="element_{$element->id}_2">{$lang['address_street2']}</label>
</div>
<div id="li_{$element->id}_div_3" class="left">
<input id="element_{$element->id}_3" name="element_{$element->id}_3"
class="element text medium" value="{$element->populated_value['element_'.$element->id.'_3']['default_value']}" type="text" />
<label for="element_{$element->id}_3">{$lang['address_city']}</label>
</div>
<div id="li_{$element->id}_div_4" class="right">
<input id="element_{$element->id}_4" name="element_{$element->id}_4"
class="element text medium" value="{$element->populated_value['element_'.$element->id.'_4']['default_value']}" type="text" />
<label for="element_{$element->id}_4">{$lang['address_state']}</label>
</div>
<div id="li_{$element->id}_div_5" class="left">
<input id="element_{$element->id}_5" name="element_{$element->id}_5"
class="element text medium" maxlength="15" value="{$element->populated_value['element_'.$element->id.'_5']['default_value']}" type="text" />
<label for="element_{$element->id}_5">{$lang['address_zip']}</label>
</div>
<div id="li_{$element->id}_div_6" class="right">
<select class="element select medium" id="element_{$element->id}_6"
name="element_{$element->id}_6">
{$country_markup}
</select>
<label for="element_{$element->id}_6">{$lang['address_country']}</label>
</div> {$guidelines} {$error_message}
</li>
EOT;
replace with this one
$element_markup = <<<EOT
<li id="li_{$element->id}" {$error_class}>
<label class="description">{$element->title} {$span_required}</label>
<div id="li_{$element->id}_div_1">
<input id="element_{$element->id}_1" name="element_{$element->id}_1"
class="element text large"
value="{$element->populated_value['element_'.$element->id.'_1']['default_value']}"
type="text" />
<label for="element_{$element->id}_1">{$lang['address_street']}</label>
</div>
<div id="li_{$element->id}_div_2" style="display:none !important">
<input id="element_{$element->id}_2" name="element_{$element->id}_2"
class="element text large"
value="{$element->populated_value['element_'.$element->id.'_2']['default_value']}"
type="text" />
<label for="element_{$element->id}_2">{$lang['address_street2']}</label>
</div>
<div id="li_{$element->id}_div_5" class="left">
<input id="element_{$element->id}_5" name="element_{$element->id}_5"
class="element text medium" maxlength="15"
value="{$element->populated_value['element_'.$element->id.'_5']['default_value']}"
type="text" />
<label for="element_{$element->id}_5">{$lang['address_zip']}</label>
</div>
<div id="li_{$element->id}_div_3" class="right" >
<input id="element_{$element->id}_3" name="element_{$element->id}_3"
class="element text medium"
value="{$element->populated_value['element_'.$element->id.'_3']['default_value']}"
type="text" />
<label for="element_{$element->id}_3">{$lang['address_city']}</label>
</div>
<div id="li_{$element->id}_div_4" class="right" style="display:none !important">
<input id="element_{$element->id}_4" name="element_{$element->id}_4"
class="element text medium"
value="{$element->populated_value['element_'.$element->id.'_4']['default_value']}"
type="text" />
<label for="element_{$element->id}_4">{$lang['address_state']}</label>
</div>
<div id="li_{$element->id}_div_6" class="left">
<select class="element select medium" id="element_{$element->id}_6"
name="element_{$element->id}_6">
{$country_markup}
</select>
<label for="element_{$element->id}_6">{$lang['address_country']}</label>
</div> {$guidelines} {$error_message}
</li>
EOT;
it will show address element in this format
[Street Address]
[Postal/Zip Code][City]
[Country]