To get over $1 billon, go to Video Poker, select "Easy Money" and the "$25.00" game. Click on the dollar bill changer. When asked, enter 8 number 9's then click "OK". You will instandly get a new coporation card and enter in the hall of fame, but the game will freeze, and you have to restart the game. However, when you do so you will have $1 billion dollars and highest Visa card.