How do i use the cheats for Sims 2: Pets for PSP?

I found the cheats for Sims 2: Pets for PSP but I cant get them to work? What do I do? Whats the whole process?

How do i use the cheats for Sims 2: Pets for PSP?-Myspace pets www.myspace.com

press the bottom real fast one by one

check here for more detail

http://www.gamewinners.com/codes/psp/Sim...