First thing edit the phrase,
dbtech_forumtabs_no_favourites and change it to this,
Code:
Hey there {1}, you have no favourites saved. Click the <img src="dbtech/forumtabs/images/add.png" title="Add Favourite Image" /> on your favourite forums to add them to your favourites list
Then edit the template,
dbtech_forumtabs_tabs search for the following:
Code:
{vb:rawphrase dbtech_forumtabs_no_favourites}
And change it to this:
Code:
{vb:rawphrase dbtech_forumtabs_no_favourites, {vb:raw bbuserinfo.username}}
You can always edit the phrase to your liking, just remember {1} will be replaced with the users name that is viewing the message.