I've created a view with a number of exposed filters, but it is pretty ugly looking.

I'd like to improve the theming, including wrapping the whole thing in a fieldset as well as grouping some of the other elements (like pairing the published and updated inputs), but not sure how to go about this.
I tried to var_dump the form, but it seems to go on forever and my browser locks up, so I can't easily learn anything about the form that way.
I also tried putting the form as a fieldset child in another form, but getting all the form ID information and so on proved problematic (although, I did get the fieldset styling).
Anyone got any pointers?
Update:
I copied over the template from the module to my site's theme directory, and made a start.
<fieldset> <legend>Filters</legend> <div class="views-exposed-form"> <div class="views-exposed-widgets clear-block"> <?php foreach($widgets as $id => $widget): ?> <div class="views-exposed-widget"> <?php if (!empty($widget->label)): ?> <label for="<?php print $widget->id; ?>"> <?php print $widget->label; ?> </label> <?php endif; ?> <?php if (!empty($widget->operator)): ?> <div class="views-operator"> <?php print $widget->operator; ?> </div> <?php endif; ?> <div class="views-widget"> <?php print $widget->widget; ?> </div> </div> <?php endforeach; ?> <div class="views-exposed-widget"> <?php print $button ?> </div> </div> </div> </fieldset> I can't seem to figure out how to pair up the date fields - I need to somehow modify the widget properties so I can wrap them in HTML (using hook_form_alter doesn't work because the #prefix and #suffix are added to $widget->widget so they break the output)