Login to SiteStudio,
select "site map"
locate "Powered by" Logo"
Here you can replace the logo with your own, or if you wish to not have any logo and upload a "spacer.gif" image
a spacer.gif is an transparent image the size of 1 pixel by 1 pixel - this will make it invisible
To create a spacer GIF, simply open any graphics software you have - and create a file with a transparent background with the dimensions 1 pixel by 1 pixel.
Once spacer.gif images has been uploaded, dont forget to enter a url .. i.e. http://www.OccHosting.com
then click "Publish"
This must be done for every webpage.
If you have any further questions, please dont hesitate to create a support Ticket at http://www.occsupport.com