In the game there's a file named User.ini which contains most of the user preferences and key bindings. Some of them can be adjusted while playing, but more advanced settings can be adjusted via a text editor. User.ini is located at: Documents and Settings[Username]My DocumentsLemony Snicket (in Windows XP) Users[Username]My DocumentsLemony Snicket (in Windows Vista/7) Note that these can lead to undesired, crazy or seizure-inducing consequences, so make sure you have a backup of your preferences file ready. To bind any key to a command, find that key in the list, i.e. F1 or Ctrl, and type the command name after the equals sign ("="). For example, if you want to use the F1 key to fly, it should be like this: "F1=Fly" (without quotes, of course).
Invincibility - God
Deactivate Ghost and Fly cheats - Walk
Fly around the level - Fly
Freeze everything except the current player, including the camera - PlayersOnly
Noclip - Ghost
Kills the player character - Suicide
At Uncle Monty's house you will need to make a pair of Levitating Loafers for Klaus. You will find one of the invention pieces, a pair of boots, outside the shed, above the door, in Uncle Monty's garden. In order to climb up and get the boots, you will need to use the Brilliant Bopper (or the Fruit Flinger) to knock over the water cans that hang from the second floor windows. The spilled water will cause giant flowers to grow. You can then jump on these to get over to the roof and grab the boots.