I tells ya what I do,
In my FS2002K Aircraft folder I have a folder named
Aircraft Panels.
In addition to copies of all of the FS2K2 stock panels this folder also contains all of my favorite panels folders from add-on aircraft and separate generic add-on panels that I have downloaded.
This way instead of needing to copy entire panel folders over to the new planes or what not- I simply create a simple little aliased panel.cfg file for the new aircraft that reads:
[fltsim]
alias=Aircraft_Panels\Whatever_Panel
Where "Whatever_Panel" is the name of whatever panel folder I am aliasing to.
See this image of how the folder is set up:

I do the same with sounds, too.
This is kind of a neat way of doing thing because aliased panels never disappear when the aircraft do.
Anyway, its an idea!
Cheers,
Chris[img]URL[/img]