All you need to do is add it to the product_detail.tpl.php... I believe show.product.detail.tpl.php for for an older version of Squirrelcart.
File: squirrelcart/themes/<THEME_NAME>/product_detail.tpl.php
Example: This would put it right above the price.
Find: "<h2>Buy Now!</h2>" and put the line of code Jamie stated just like this.
PHP Code:
<div class="prod_section buy_now">
<h2>Buy Now!</h2>
Number in stock: <?=$Number_in_Stock?><br />
If you want it in the category details where all products are shown with thumbnails, do this.
File: squirrelcart/themes/<THEME_NAME>/product_thumbnail.tpl.php
Example: This would put it right above the price.
Find: "<!-- price info -->" and put the line of code Jamie stated just like this.
PHP Code:
<!-- price info -->
Number in stock: <?=$Number_in_Stock?><br />
If you want it in featured products as well, do this.
File: squirrelcart/themes/<THEME_NAME>/featured_product.tpl.php
Example: This would put it right above the price.
Find: "<div class="featured_price">" and put the line of code Jamie stated just like this.
PHP Code:
<div class="featured_price">
Number in stock: <?=$Number_in_Stock?><br />
Hope that helps.
Thanks,
Jarrod