Get current product data in custom file in magento

HI in some project i need to develop a module through which i need to insert a newly created product attribute  on product page with the modue xml file . For that i need to havethe current product data in my module file.

for that i have use the below function

$product_id = Mage::registry('current_product')->getId(); 

with this when your file will include in the porduct view page.it will load

 product id from your file.You can get any value from this.