2
try system admin -> preferences -> meta and footer settings. If that doesn't work, check if your current active theme has <{$xoops_footer}> where the footer should be:
themes/
name of your current theme/theme.html
Oh, even tho it is not a requirement, we do think it is polite and nice to show that XOOPS is powering your website. It's the least you can do for all the people who have helped you so far
Herko