For the concorde you need to go back to the site you downloaded it from. If it was SimV use the "search" option between sitemap and upload images.
You may have to bite the bullet and re-download the whole aircraft.
Once you have the aircraft find the guages that come with it and copy/paste them into your FS2k2 GAUGES folder. I have this as a shortcut on my desktop.
As for the sounds you need to copy these into the Sounds folder in FS2k2.
I'm not sure about effects as I've never managed to get even the basic smoke to work on my system.
I hope this helps. You have to be aware that as with all software the quality will vary from designer to designer and some may well be bugged and never "look" right.
I have downloaded some fantastic aircraft that feel "right" but are let down by the panel.
It may be worth reading the articles on the SimV help section. If you can live with your concorde having a B747 panel this will tell you how to do it.
Good luck and I hope this helps.
Will