Is there a proper way of setting up the dynamic URL products for a friendly SEO? it appears it does not like the ? or _

You may want to read these instructions. https://www.ecommercetemplates.com/seo/search-engine-friendly-urls-asp.asp. Just make sure the character you use for the spacing (detlinkspacechar="-"), usually a hyphen or underscore, is not in any of the product names as it will throw an error.

Marshall
CENLYT Productions - ms designs
Affordable Web Design
Custom Ecommerce Designs
Responsive Websites
Cenlyt.com