Hi MizBiz,
When you post items through eBay, it typically takes 4-6 hours for them to be imported into your Auctiva account. After that, they should be displayed in your store window the next time it refreshes, which it does about every 4 hours.
If there is anything further we can do to assist you, please file a support request using the appropriate link on our help page:
http://www.auctiva.com/free_auction_software_help/help.aspx
-Mike