Success!!! I've figured it out! Lol, I'm sooo happy now. It took me a little while to work this out, but now I know how to put new planes into dynamic campaigns. I've added my 109E-1 to the DCG's "Poland '39" campaign. So, it's simply a matter of repeating this process for any other planes/campaigns I would like to modify. Upon my first try, I got the E-1 onto the selection menu, selected it, and clicked generate. It crashed that time, and told me: "" is invalid integer. So, I went back and changed some of the other files, and bingo! Got it! Generated my new 109E-1 DC, spawned in, and it worked like a charm!
Before I did this, I searched and searched all over the net to find some info, or some type of guide, that could tell me how to do it. I found NOTHING... If any sufficient info on how to do this exists, I sure didn't find it. So, I basically just started tampering around until it worked. But, I was smart enough to write down EVERY change I made to EVERY file and the corresponding locations. I originally did this so I could go fix anything if I screwed my game up, but now I have my own handy little guide on how to do this. I'm sure there are others out there who would like to do this, so if you want my info, just let me know. I will be more than happy to share it with you.
So, now I'm down to only one question. Do you know that Europlanes.dat file in your DGEN folder? Well, I added the 109E-1 to it as follows:
Axis Germany Fighter BF_109E1 400 3000 3000 default 1
Now, I know those numbers have to do with the weapons loadout, right? Well, I actually just copied the 109E-4's listing, but changed the name to E-1. What I want to know is if this is a problem? Will I still have the correct, default weapons loadout? Or is my ammo count wrong? I really didn't know how to properly write out the E-1's weapon loadout, and that's why I copied the E4's. In game, it still has only 4x MG17s. So, all I'm wondering about is my ammo count. I spawned in and just held the trigger down, and it seemed to fire an awful lot of rounds. I guess I should do a QMB'er mission and see if it seems about the same. But, if anyone has any more info on how to write out weapons loadout numbers in that Europlanes.dat file, please let me know. That will even be a great help for adding future aircraft to dynamic campaigns.
Thanks for all the help so far everyone! Hope to learn some more soon!