Hi Tazmaniac1967,
After looking at the provided screen shots, I believe the reason the "Accept Offers from Buyers" option is not available is because you haven't selected a category. Not all eBay listing categories support the "Best Offer" option so the "Accept Offers from Buyer" box doesn't appear until you have selected a category for which that feature is supported.
Any additional questions? Please file a support request using the appropriate link on our help page: http://www.auctiva.com/free-auction-software-help/help.aspx
-Mike