Maybe you have a non-US-keyboard? I do, and to use the BV hood cheat for example, I had to check what keys those were at my Swedish keyboard. Here is a link to a map of a US-keyboard:
http://www.penticoff.com/nb/images/USKeyboard.jpg You can also try other keys outside the letter ones. I don't think it works with alt gr -keys.
Hm, for me (Swedish keyboard) I have to type the Å and ´ (stress-mark) keys to get objects to move up and down, not exactly the same as in this picture, I've had problems with the FT cheat to change NH terrain though, I'll try this pic out to see if I get anywhere with that.
I know Pescado can't be serious, but for anyone else who doubts programming abilities on non-US keyboards [ ] are (for us Swedes anyway) written by pressing ALT GR + 8 or 9.