if product has tier prices we can create dropdown in cart .. otherwise there will be standart QTY box
first update default.phtml … in checkout/cart/item/.. with code below

getProductId();

$prices = $_product->getTierPrice();
if($prices!=NULL){
echo '';
echo ''.$this->getQty().'';
foreach($prices as $tier){

echo '

'.intval($tier[price_qty]).'';
}
echo '';
?>
size="4" title="__('Qty') ?>" class="input-text input-block-level qty" maxlength="12" />

size="4" title="__('Qty') ?>" class="input-text input-block-level qty" maxlength="12" />

and at the bottom add this

next.. update cart.phtml in checkout/cart.phtml
find button “Update Shopping Cart” and add id=”update_cart”

class="btn btn-link update"> __('Update Shopping Cart'); ?>

In category product list view you can create your own product collection
for example you want show only few products using product ID (products are not assigned to the category)
at the top of the list.phtml add below $_productCollection=$this->_getProductCollection();

$getData=array(product_id1,product_id2,....); //$getData contains product IDs

$_productCollection = Mage::getModel('catalog/product')->getCollection()->addAttributeToSelect('*')->addFieldToFilter('entity_id', array('in'=> $getData));

if you want show products from more categories in one category

$categorylist=array(categoryID_1,category_ID2)

$_productCollection = Mage::getModel('catalog/product')->getCollection()
->joinField('category_id', 'catalog/category_product', 'category_id', 'product_id = entity_id', null, 'left')
->addAttributeToSelect('*')->addAttributeToFilter('category_id', $categorylist);

Customer import:
system -> import/export -> dataflow -profiles -> Customer Import

minimal details for import are:
"website","email","group","firstname","lastname","password_hash"
"base","mam@alenedam.com","General","Firstname","Lastname","6e581d6696df85c8b51c4a3d5b21d0b4:"

RE password_hash:… MD5
if you got CSV with reall passwords, the real password must be hased using MD5. Don’t forget add : at the end of the string.
real password : 123456 …. hashed password : e10adc3949ba59abbe56e057f20f883e ….. hashed password for import: e10adc3949ba59abbe56e057f20f883e: