lmao, I don't know what I know anymore. I KNOW I am breathing........beyond that it's guesswork!!

Yea, I am pretty sure you have to rebuild the .cab files. I am guessing that even if you work on just one file in that .cab file, ALL those files will have to be extracted and then all of them, INCLUDING the one you reworked, BUILT into a new .CAB file with a Cab file packaging utility.
And Guess What???!!!! I found that post I was talking about.
Here is the one that was mentioned in the post:
1] This one was highly praised by panel designers at SOH:
CabPack 1.4
http://home.t-online.de/home/lars.hederer/english.htmSupposedly Microsoft has one too at their Flight Sim Insider website too.
Good luck and have fun!
Systemax Sabre Ultimate gaming rig.
I got all the goodies and all the power I need to run anything thrown at me for the next two months!