D3 console woes

I can not toggle the console in Doom3. Can anyone give some advice. I tried to edit the config, and it still won't let me toggle the console. I want to do a timedemo. Could anyone give the commands for this also.

bind "~" "toggleconsole"

That won't work for me. I am probably doing something stupid.

Thanks:

Z

ctrl shift ~

or ctrl alt ~, something like that