Level skip:

Always make a backup copy before changing
any system file!!!

Using any text editor, open the at.ini file
located in the main game directory. Locate
the following passage:

[Pilot]
Name=Pilot's name
Level=X

Change the X to the top level, or just
add 1 level if you're stuck at a particular
level, but don't wish to skip 10 levels
ahead (e.g. if it says level=1 change to level=2).