[SMARTY] Creating custom loop block function

I need some help from someone who's got more experience than me with
Smarty. I've been tasked to create a set of block functions for
rendering tables. Here's what the syntax look like:

---proba.html---

       {list data=$rows}

               {head}
                       {column}1{/column}
                       {column}2{/column}
                       {column}3{/column}
               {/head}

               {rows}
                       {cell}
                               0. {$SKU} {$data.SKU}
                       {/cell}
                       {cell} 0. {$brand} {$data.brand} {/cell}
                       {cell} 0. {$model} {$data.model} {/cell}
               {/rows}
       {/list}

---end-of-file---

The $rows data is somethink like that:

---proba.php---
.....

$smarty->assign('rows',
       array(
               array(
                       SKU => 1,
                       brand => 11,
                       model => 11,
                        ),

               array(
                       SKU => 2,
                       brand => 22,
                       model => 22,
                       ),
               )
       );

....
---end-of-file---

I need to make the smarty_block_rows() block function loop over the
data in $rows. In the same time I need to access the elements (SKU,
brand, model) on each loop. The HTML for the block components are read
from an external file. If you want to take a look at the code, please
follow this link: http://kaloyan.info/loop.zip.

Thanks in advance to all which will provide any help, comment or
advice.

K.