joey2509 wrote: I cannot see all the buttons that are on top of forum i.e. my posts, recent topics etc. Is that something I have to set up in the admin?
The buttons, as you call them, are collectively known as the
Kunena Menu; sometimes people it the "top menu" or the "top horizontal menu" or even the "navigation menu". Whatever you refer to it as, the menu is normally set up for you as long as you (a) did not have major dramas with the installation procedure in the first place - which you did - and (b) you have a fairly "standard" mod_mainmenu menu module that's being used. Most sites use a mod_mainmenu but many sites don't.
Anyway, there are lots of ways to produce the menu. See
Troubleshooting Kunena Menu
in the Wiki.
I don't know anything about whether the header graphic on your website is displayed correctly or not. Whatever the case, it is displayed consistently on every page and therefore this has nothing to do with the installation of
Kunena.
Now that we have successfully dealt with overcoming your "upgrade nightmare" and you now have K 1.6 installed (even though you are still wrestling with your
Kunena menu problems) I think this topic has served its purpose as an illustration of the precautions that users need to make before upgrading
Kunena and as a demonstration of the systematic approach that people should take whenever they plan to upgrade any software -
Kunena, Joomla or otherwise.