Ok Great.
I was worried that if I had already modded my graphics.cfg file that it would loose those changes. But I see in Walmis's description of the program, it will only add or remove just the lines you want, not overwrite the entire file. So, this should work great. Thanks.
EDIT:
I just installed it using ModMan 6, and had no errors installing. But the EnglishCockpit.cdds file's status is red, and it does not exist in the Bazar/World game folder. However, I removed the .cdds file and readded it to the mod file, and now it installs green. There may be some difference between Modman versions. (Just FYI)
Also, what is the filemanagement.lma file? I don't see it as part of the Modman package.