ProCurve 2910 trunked to another with multiple VLANS. Want to add new VLAN on HP V1900

[Kathleen-GL]

I have 2 ProCurve 2910-48G switches (J9147A) that are trunked together.  I have fiber from one of them to a HP V1900-8G (3COM 3CDSG8) switch.  I want this switch to feed 2 VLANS.  These VLANS already exist on the core switch.  This small switch feeds 2 buildings and I would like them to join their related VLANS.  Is this even possible  with this switch?

I could only see the option of numbing the VLAN on the second switch, not naming it the same as the current ones.  I would assume I would trunk this to the core switch but it won't help if I can't name these 2 VLANS the same.  It's not actually the name I'm concerned about but I need them to pick up the IP's through DHCP, based on the VLAN the device is connected to. Or is the "name" what's hanging me up?

Is there a way to create 2 VLANS from the core switch (2910) or does this have to be done on the end switch? 

My ultimate goal is really to have one building to get 172.16.5.x IPs and the other building to get 172.16.3x IPs and there are 2 other buildings that are getting IPs from one or the other same pools.

[Vince-Whirlwind]

The name doesn't affect anything.

You need to -

 - add the VLANs to the Core switch trunk interface that connects to your new switch

 - create the VLANs on the new switch

 - add the VLANs to the new switch trunk interface that connects  to your core

 - configure the each new switch edge port into its correct VLAN