Hi
Edit skin1/customer/main/product.tpl
Code:
{if $config.Appearance.show_in_stock eq "Y" and $config.General.unlimited_products ne "Y" and $product.distribution eq ""}
<TR><TD width="30%">{$lng.lbl_quantity}</TD><TD class="InStockText" nowrap><SPAN id="product_avail_txt">{if $product.avail gt 0}Item(s) In Stock</SPAN>{else}<SPAN class="OutOfText" nowrap>Item(s) out of stock (1-3 days)</span>{/if}</TD></TR>
{/if}
{if $product.weight ne "0.00"}<TR><TD width="30%">{$lng.lbl_weight}</TD><TD nowrap><SPAN id="product_weight">{$product.weight}</SPAN> {$config.General.weight_symbol}<SPAN class="WeightText" nowrap> (Postage is calculated by weight)</SPAN></TD></TR>{/if}
Hope that helps