Thanks Captain Kevin,
When a person builds a home cockpit (or a small resemblance of one) 90% of the effort is in getting everything working, and once achieved, not wanting to make any changes to the software mix. This is why some people are still on FSX and even FS9!!
I am just wondering why FSDT don't provide access to older versions for people in that situation.
As it happens, I got things to work by copying various locations of my old PC, but having progressed thru several online updates, I didn't have a full installer of the last version before 4.4.
I have the same issue with PMDG who's auto updater now simply says that my version of the 737 is too old to update to the last release before the 737NGXu. I had to do the same old install/overwrite with a newer backup trick to get it working.
Cheers