Be careful. You might want to De-Activate your FSDT airports before you do that. I just replaced 2 of my hard drives (Windows Drive, and FSX drive) with new SSD's, and did a clone of the windows drive onto the new SSD. When I was up and running, and launched FSX, every single one of my FSDT airports errored due to "Machine Mismatch", and I had to re-activate them all. Funny thing is. Windows 7 did not have a problem, nor did FSX itself, as far as needing re-activation, or any other software I have on that machine. Only the FSDT airports.
Lesson Learned I guess... Just thought I would throw the reminder out here.
-m@