If you want quality players for free put in a bid for a player you want and put it high enough so that the club automatically accepts the offer. When they have accepted go to the 'Offer' screen and adjust the offer to 0 and press 'Cancel'. When you do this the player you selected will be yours for nothing.
When you start at the beginning on the screen where it says Data editor, 16MB game, 8MB game and quit.
Go to data editor, then go to load database and type in: players.
db1 this gives you the opportunity to see every single player on the game but to create your own player go to add record and from there you can create your own player and you can put players in different teams but you HAVE to start a new league for this to work.
And don't change too many players or else it won't work.