You're welcome TrEmEnDoUs
Please try to open new topics on new questions and not post all in one topic and also try searching the forum for answers that are already there.
If you post a help request be as specific as you can and maybe add a link to or a screenshot of your board to show what you mean.
(example: I want to do this OR that ...is nót specific
You will find the SITENAME and SITE_DESCRIPTION in the overall_header.html right below:
I hope this at least pushed you in the right direction but if not ...please search in the phpbb section here first and open a new topic if the searching did not help enough