how to shutdown one VM guest in Virtual Box 4.1.22

[ipodtrip]

To anyone I have a Virtualbox with 6 guest VM running on a box that has CentOS.
I want to shutdown one of the guest and turn it back on. When I right click on the one VM guest I don't see a close button like the Windows version of Virtual box.
How can I shut it down and then turn it back on.
I also want it to boot to the VM without the headless mode.
Bear with me as I am a beginner using CentOS.

Thanks

[Perryg]

See http://www.virtualbox.org/manual/ch08.html

controlvm & startvm

[ipodtrip]

is this the way to shutdown the guest VM.

1. On my CentOS go to Terminal
2. type in the command # VBoxManage list vms this is to get the list of VM.
3. type in VBoxManage controlvm “nameofmachine” poweroff

For these command line do I need to use the #su root to be in the root account

[Perryg]

Shouldn't. Just the user account that started the guest.

[ipodtrip]

Thanks PerryG
so the steps from 1 to 3 are fine.