ok you will need to edit 2 files
make backups of both first****
custoemr/main/product_t.tpl
and skin1.css
find this code in product_t.tpl
<a href="product.php?productid={$products[product].productid}&cat={$cat}&page={$navigation_p age}" class="ProductTitle">{$products[product].product}</a><br />
change to this
<div class="prodTitle"><a href="product.php?productid={$products[product].productid}&cat={$cat}&page={$navigation_p age}" class="ProductTitle">{$products[product].product}</a></div><br />
add this to skin1.css
.prodTitle{
height:33px;
}
upload both files.
increase or decrease 33px until desired result is reached.