Is there a cheat to pass a mission on GTA vice city psp?

There are no cheats to get a mansion but there are to get an inordinate amount of money. To get this follow these instructions:

Press the following keys together: Ctrl + Shift + C

Type in: testingcheatsenabled true

Then: familyfunds [enter family name here] 99999999

This will give your sim 99,999,999.