I have noticed that search engines give my url in the following form.

www.***.com/catalog/ product_info.php/cPath/38/products_id/170

This takes the people to a product not found page and they click away. My Urls are of the following form

http://www.***.com/catalog/product_i...roducts_id=170

Is there a way to correct this or change it?

Thank you,
John