The original missions, Where can I find them? Options

[Scorch]

(I'm quite sure this is the right place to post my question.)

Sooo, I recently (today) uninstalled and then reinstalled my TS game. I did this because the original campaign for GDI would not work for reasons unknown to me. They work now. (I saved everything I had been working on and now it's all back in there.) I have not installed firestorm yet, so I have a clean TS.

I have come across I mission I would like to make harder, although I cannot find any of the missions through XCC. Any missions from Firestorm are easy enough to find and edit, but it's impossible to find any of the original missions.

So, could anyone please tell me where I would be able to find and extract these missions? (Or upload them If you could?) Thank's in advance.