Mark, thankyou for your quick reply.  I've since tried one more install this time though I used the the manual authorization process.  The good news is the install was a good one and the L1011 works! With the previous install I checked the file held in captainsim, program data, it showed that there were indeed errors caused by the firewall even though this was, as I thought, turned off.  So even if you think all your security is off it may not be something to remember for me. Anyway thanks for your help it was very much appreciated. :D A happy simmer here!

Stay safe and keep strong
All the best

Steve