> -* 
> +www.somesite.com/surfing/eComm?template=product&cus
> t_no=*
> 
> 
> This way I should not hit links that take me back to
> the same content.
> Any suggestion on how I can make this work? 


Well you've got the right idea with those rules.  It really depends on the
rest of the pages.  You'll have to look at the different combinations of URLs
you need.