1. I'm trying to set the MediaWiki "Myskin" theme as the default theme for the entire wiki but have no idea how to do this. Do I need to edit "localSettings.php" and if so, what actual line in the file needs to be edited and what code do I need to include?
Edit the line $wgDefaultSkin = 'skinname';
2. My wiki's root (which currently only exists on a development environment that is not network linked) is: http://localhost/eurowiki/ I should point out however, and this is very important, the standard installation (which I followed religiously) of version 1.5.1 (or whatever is the latest version) seems to result in an automatic redirect being in place such that entering this URL into the location bar of a web browser actually redirects the page to: http://localhost/eurowiki/index.php/Main_Page
Anyway the point is this. If I go to: http://localhost/eurowiki/MediaWiki:Myskin.css whilst logged in as an Administrator, I get a 403 page generated via Apache. Obviously I need to edit this page with the CSS code from Nullbook or I need to import it which I don't want to do because I don't know how long Samat is going to make it available.
The page you need to edit is http://localhost/eurowiki/index.php/MediaWiki:Myskin.css
This will be true of all pages, so a page "My Page" will be at http://localhost/eurowiki/index.php/My_Page, for example.
Enjoy :)