This works in any other of the fox series,
# Go to admin cp.
# Expand styles and templates.
# Click template manager.
# Expand the all style options menu and then click edit templates
# Search in the template for <!-- nav buttons bar --> Below this is a list of your buttons.
# To create you button edit this text:
<td width="78" height="34" class="css_nav"><a href="The url you want to visit here" rel="nofollow">Button Text</a></td>
# Now you should add it somewhere below <!-- nav buttons bar --> after you edited it.
# Just make sure its not inside any other buttons.
# Now press save check refresh your forums and your button should be there.
# Go to admin cp.
# Expand styles and templates.
# Click template manager.
# Expand the all style options menu and then click edit templates
# Search in the template for <!-- nav buttons bar --> Below this is a list of your buttons.
# To create you button edit this text:
<td width="78" height="34" class="css_nav"><a href="The url you want to visit here" rel="nofollow">Button Text</a></td>
# Now you should add it somewhere below <!-- nav buttons bar --> after you edited it.
# Just make sure its not inside any other buttons.
# Now press save check refresh your forums and your button should be there.