Just press backspace at any point in the game, registered version only. Unfortunatly, you lose all your money. To skip to any level, go to the sector screen and hitZ for Bravo sector X for Tango sector, and Y for Other Regions. Then, push the following keys to select the level you want to play - Q for Level 1 W for Level 2 E for Level 3 R for Level4 T for Level 5 Y for Level 6 U for Level 7 I for Level 8 O for Level 9