Hi Yan,
I am not able to understand what exactly you want this switch to work as but as per what I understand from your scenario then you are introducing this new switch into the network.
As per me if this is local to your network you can define ip address to this switch to manage it. Also because you have only one vlan I do not think you need any VTP configuration on this switch and you can manually create that vlan.
VTP is only for vlan synchronisation so that you need not to configure vlans on all the switches so even if you do not cofigure this switch in same VTP domain but configuer that vlan manually you will be able to pass traffic for that vlan.
You can explain furthur what exactly you want and then we can help you providing that information.
Ankur