How do I get attribute set name?

Whenever you have a product object, you can access its attribute set like this:

$attributeSetModel = Mage::getModel("eav/entity_attribute_set");
$attributeSetModel->load($product->getAttributeSetId());
$attributeSetName  = $attributeSetModel->getAttributeSetName();

This will give you the name of the attribute set, which you can then compare using strcmp:

if(0 == strcmp($attributeSetName, 'My Attribute Set')) {
    print $product->getAttributeText('attribute');
}

Hope that helps!

For more sexyness you can shorten it to:

$attributeSetName = Mage::getModel('eav/entity_attribute_set')->load($_product->getAttributeSetId())->getAttributeSetName();

Try the following code:

$entityTypeId = Mage::getModel('eav/entity')
                ->setType('catalog_product')
                ->getTypeId();
$attributeSetName   = 'Default';
$attributeSetId     = Mage::getModel('eav/entity_attribute_set')
                    ->getCollection()
                    ->setEntityTypeFilter($entityTypeId)
                    ->addFieldToFilter('attribute_set_name', $attributeSetName)
                    ->getFirstItem()
                    ->getAttributeSetId();
echo $attributeSetId;

Find more info about Attribute Set in the following article.

Thanks