Real players
Due to licensing some National Teams don't have proper players (Germany for example)
To get rid of this go to "C:/Program Files/Sports Interactive/Football Manager 2008/data/db/800/lnc/all" once there copy the file entitled "fake.lnc" (You may wish to put it in a safe place as backup if needed) then delete the file "fake.lnc" and when you start a new game the countries effected will have the proper squad.
All this file does it put a "mask" on the national teams effected and once you remove it will get rid of the mask.