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Due to the licensing restrictions on the game not all the national teams have legitimate players. This can be easily corrected by removing the file that creates a 'mask' on the effected teams. To get rid of the 'mask' go to 'C:/Program Files/Sports Interactive/Football Manager 2008/data/db/800/lnc/all' and remove the file 'fake' inc (don't delete the file) and when you now start a new game the correct squads for ALL the national teams will be available.
AFAIK "team Holland" does the same for the Netherlands team, while "Make me Chairman" is a file where you can specify a new chairman for a club in the future. I don't know the specifics, though...
But both .edt and .lnc files can be opened in a text editor, and there's some instructions in some of the files themselves.
Also, I think you can delete all the .lnc files in the "all" folder, seems they're all fake filters.