Hi Amy,
Since the popup window is not appearing when you click the "Get HTML" button, there must be a popup blocker enabled on your system or browser...perhaps just not the one you are thinking of.
Many applications, i.e. AdAware and the Yahoo toolbar, come with popup blockers enabled that could be preventing this window from being displayed.
If you would like further assistance with this matter, I suggest filing a support case using the appropriate link on our help page.
http://www.auctiva.com/free_auction_software_help/help.aspx
-Mike