Duplicate Content and Multiple Catagories

Duplicate Content is becoming more and more of an issue with search engines.

Having one item in several categories is pretty common. I was thinking about having two product structures, one set of categories for product type and organized by application. However, I have been advised againist it due the the nature of product carts url.
viewPrd.asp?idcategory=52&idproduct=1342
By including the idcategory in the product url, it makes each listing of the product an unique page to the search engine, with identical content except for the category description in the header. 
Ideally, once you navigate to the product page, the url would only have the product id.

Is it Possible?

thanks for the suggestion, If I understood you right a workaround would be to search and replace
 <a href='viewPrd.asp?idcategory=<%=pIdCategory%>&idpr oduct=<%=pIdProduct%>'>
 with <a href='viewPrd.asp?iidproduct=<%=pIdProduct%>'>
throughout viewPRd.asp, don't I also have to do the same in viewCat_h.asp

My real point for the post was, as new feature, if there is not a solid reason for having the category identifier in the product detail url, You should consider making the lack of the category id the default in the new verision if you want to maximize the search engine friendly aspect of the cart.