phpMyAdmin is used to edit and browse databases like MySQL so if you haven't got a database you won't need to look at that, but it's very probable that you have got a database for the search facility.
In your control panel do you have a button called File Manager? This will open up your directory (folder) structure with all the files.
If you haven't been given a cd with all the files, download them onto your computer using an ftp program (IE6 and IE7 have an inbuilt ftp program) creating the same folder structure as the directories. Make a backup copy.
Then open any file with Notepad, even those with a .php filename extension, and edit them. Use online tutorials to learn HTML and CSS which are the basic things to learn to do basic editing of content and images. Don't edit the tags and codes if you don't understand them (anything inside <...> is code).
Upload the revised files using a ftp program. See http://www.wickham43.supanet.com/tut...e.html#hosting
See http://www.wickham43.supanet.com/tutorial/links.html for some links to tutorials and other essential websites.
I think you will need some help. It's a complicated website with search options that you will have to enter as well as basic text and images.
Code downloaded to my PC will be deleted in due course.
WIN7; IE9, Firefox, Opera, Chrome and Safari for Windows; screen resolution usually 1366*768.
Also IE6 on W98 with 800*600 and IE8 on Vista 1440*900.