We’ll taken them one at a time:
#
$SITE[‘UVscript’] = ‘get-UV-forecast-inc.php’; // worldwide forecast script for UV Index
// comment out above line to exclude UV forecast
//If you don’t have/want the UV forecast then just put // at the start of the line: //$SITE[‘UVscript’]
[b]# if you have WXSIM and plaintext-parser.php, set $SITE[‘WXSIM’] = true;
to have the WXSIM forecast text appear in the dashboard along with your primary forecast org’s
forecast.
$SITE[‘WXSIM’] = true; // Set to false if no WXSIM/plaintext-parser.php
$SITE[‘WXSIMscript’] = ‘plaintext-parser.php’; // script for decoding plaintext.txt into icons
$SITE[‘defaultlang’] = ‘en’; // ‘en’ for English (WXSIM plaintext-parser.php)[/b]
If you don’t have WXSIM then change the “= true;” to “= false;”
# fcsturlWU the Wunderground URL for the non-US/non-Canadian forecasts (WU-forecast.php)
$SITE[‘fcsturlWU’] = ‘Local Weather Forecast, News and Conditions | Weather Underground’; // Awhitu, Waiuku New Zealand
This is the Weather Underground forecast, for your area you’ll need Norwich (it’s the closest one on there) so change the URL to this:
$SITE[‘fcsturlWU’] = ‘http://www.wunderground.com/global/stations/03492.html’; // Norwich, Norfolk, UK
$SITE[‘fcsticonsdir’] = ‘./forecast/images/’; // NOAA-style icons for NWS, WU, WXSIM forecast scripts
You don’t have a folder called “forecast” in the directory, see if it was in the download and if it was then upload it to the server. If you don’t have it then we’ll find it for you tomorrow. 
#---- in the following section, enable settings for ONE primary forecast organization
pick which script AND org are to be used for your forecast here: (last uncommented pair will
be the ones used on the wxforecast.php page and in your dashboard and sidebar
Leave this last one as it is.
Once you’ve done all of this then save the setting.php file and upload it to the website.
I think that’ll do me for tonight, we’ll carry on in the morning. 