Sorry everyone
1and1 are crap! I emailed them right away to see what was going on - it's nearly 48 hours now and I've still not received a reply to 3 emails. I finally found the problem, one of there many spam emails wasn't spam and was in fact telling me the server was going to be upgraded with new versions of apache and some other stuff.
I have spent hours tonight trying to work around it but have to admit I've no idea what I'm doing
I've tried to get my ancient php includes working but failed - and have had to change to a more 'correct' way of doing the includes:
<?php include $_SERVER['DOCUMENT_ROOT'] . '/rc/includes/header.php'; ?>
Instead of:
<?php include("http://www.oople.com/rc/includes/header.php"); ?>
.....
It works now - but the hard coded pages on the rest of the site won't show certain things like the header or some buttons on big reports, until I've downloaded everything, replaced all the code and uploaded the files again.
I'll try again tomorrow to figure out how to get the old style includes working - as a quick fix.