I have given the list of sites to my server guy who turned me down in my last set of uploads and he has come back with the following which may be of some info for anyone interested :-
''These sites are requesting URL's on your domain with a "^" character in the heading. This character is prohibited for security reasons and can be exploited. It is usually included in poorly written scripts and unnecessary to normal web server trafficing. However I have rescinded this security directive server wide to confirm/deny this fact. Please confirm that these link trades are now permissible?''
It will now be interesting to see what happens with my next batch of free site submissions.
With regards the .htm and html I tried both and that wasnt the problem and the adevil.com etc should have the prefix in front of both
http://www.adevil.com/ - they seem to load ok for me - hope they are ok for everyone else