Is their away to change the voice command key for it to open the camera application?

Unfortunately I don't have the manual the phone came with here in Cyprus and can't find anything on the web.

I've included an image to show you which button I mean, obviously the button in question is circled in red.

http://img718.imageshack.us/img718/209/nokiae72.png

Thanks,

James.

Nope, I don't think it's possible to do this.