Just wondering if i make some changes in the game like my own team and my own flags and maybe mess up littel whit the ini file and than i will play online and be the host, will my changes be ther ??? I mean can i play whit the team i have made ??? And will i see my flags and so on ????

One more thing can you play like 4 ppl from diffrent computers in one game ????

You can select an option to download rosters from the host or use the default database when in multiplayer.

Changing the .ini file for multiplayer most likely will cause some sort of malfunction unless your opponent has the same file.