Hi Rhed,
Since each different eBay site uses a slightly different lister form, you will need to create separate profiles for each listing site.
To get started with an eBay UK profile, click the appropriate link under the "Profiles" tab. Then, select "United Kingdom" from the "eBay site" pull down menu at the upper right hand portion of the ensuing page, and get started with your UK profile. You can create profiles to be used for your eBay AU listings in the same manner, however, we do not support listing to eBay Canada at this time.
I hope this is the help you need If you need further assistance with this issue, please file a support request using the appropriate link on our help page:
http://www.auctiva.com/free_auction_software_help/help.aspx
-Mike