How to send keyboard signal to guest vm?

Hi, how do you send keyboard signal to guest vm?
eg: ctrl+alt+del, ctrl+alt+back, ctrl+alt+f1 ....

And which keyboard driver should i use on linux/bsd guest vm, i can not make the number pad work on linux/bsd guest vm, it work on winxp guest vm.

Can anyone share your Xorg.conf configure file here? Thank you.

I use ubuntu/amd64 2.6.27-11-generic kernel,
and kvm 0.82

my cpu is: Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz

Try using sendkey monitor command, e.g. "sendkey ctrl-alt-f1".