99 skill players
If you do go into the files that are included with the game to locate a game database editor. Now start it, then click on "Edit players/Clubs". Next go to a country, and then a team. Click on "Players" and select "Edit Player". Next click on "Player Skill" and change each skill to 255. Then, change his age to 24. Next, return to the main menu and select "File", then "Export". You will not have to save the file, but if your computer crashes you do keep the information. Then, start a new game. The player you changed will have 99 skill. He will cost plenty of money to buy him just move him to the team you like instead.

Hex Cheat
You will have to open your saved game and then go to offset:
E296F0 And change the value to \"0000008074D2CA41\"
To receive 900,000,000.