Yes, alter the "skin/common_files/customer/main/product.tpl" template and replace this code:
Code:
{include file="customer/main/ui_tabs.tpl" prefix="product-tabs-" mode="inline" tabs=$product_tabs}
with this:
Code:
{include file="customer/main/ui_tabs.tpl" prefix="product-tabs-" mode="inline" tabs=$product_tabs selected=1}